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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-21702

Name of Fund: BlackRock Health Sciences Trust (BME)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Donald C. Burke, Chief Executive Officer, BlackRock Health Sciences Trust, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 10/31/2009

Date of reporting period: 11/01/2008 – 01/31/2009


Item 1 – Schedule of Investments

 

 

Schedule of Investments January 31, 2009 (Unaudited)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

Shares

 

Common Stocks

 

Value

 







 

 

 

Biotechnology—18.3%

 

 

 

 

 

15,700

 

3SBio, Inc. (ADR) (a)

 

$

83,681

 

 

4,100

 

Acorda Therapeutics, Inc. (a)

 

 

100,573

 

 

38,100

 

Alexion Pharmaceuticals, Inc. (a)

 

 

1,404,747

 

 

212,100

 

Amgen, Inc. (a)(b)

 

 

11,633,685

 

 

20,300

 

ARYx Therapeutics, Inc. (a)

 

 

46,690

 

 

5,000

 

Biogen Idec, Inc. (a)

 

 

243,250

 

 

160,500

 

Celera Corp. (a)

 

 

1,354,620

 

 

126,160

 

Genentech, Inc. (a)

 

 

10,249,238

 

 

50,430

 

Genzyme Corp. (a)

 

 

3,475,636

 

 

45,200

 

Halozyme Therapeutics, Inc. (a)

 

 

260,804

 

 

33,700

 

Incyte Corp. Ltd. (a)

 

 

98,741

 

 

15,420

 

Integra LifeSciences Holdings Corp. (a)(c)

 

 

427,751

 

 

7,600

 

InterMune, Inc. (a)

 

 

86,944

 

 

13,200

 

Nanosphere, Inc. (a)

 

 

60,060

 

 

71,190

 

Vertex Pharmaceuticals, Inc. (a)

 

 

2,352,829

 

 

 

 

 

 



 

 

 

 

 

 

 

31,879,249

 









 

 

 

Commercial Services—1.1%

 

 

 

 

 

45,110

 

McKesson Corp.

 

 

1,993,862

 









 

 

 

Healthcare Products—22.4%

 

 

 

 

 

43,200

 

Alcon, Inc.

 

 

3,699,648

 

 

66,695

 

Alphatec Holdings, Inc. (a)

 

 

144,728

 

 

125,550

 

Baxter International, Inc.

 

 

7,363,508

 

 

52,880

 

Beckman Coulter, Inc.

 

 

2,629,194

 

 

83,000

 

Becton Dickinson & Co.

 

 

6,031,610

 

 

35,060

 

Covidien Ltd.

 

 

1,344,200

 

 

66,000

 

Cyberonics, Inc. (a)

 

 

1,015,740

 

 

59,600

 

DexCom, Inc. (a)

 

 

192,508

 

 

32,200

 

DiaSorin S.p.A.

 

 

583,229

 

 

87,200

 

Immucor, Inc. (a)

 

 

2,416,312

 

 

58,470

 

Johnson & Johnson

 

 

3,373,134

 

 

9,400

 

Masimo Corp. (a)

 

 

261,038

 

 

141,290

 

Medtronic, Inc.

 

 

4,731,802

 

 

207,100

 

Qiagen N.V. (a)

 

 

3,551,765

 

 

120,300

 

ResMed, Inc. (a)

 

 

472,324

 

 

37,000

 

Smith & Nephew Plc

 

 

268,203

 

 

26,800

 

St. Jude Medical, Inc. (a)

 

 

974,716

 

 

 

 

 

 



 

 

 

 

 

 

 

39,053,659

 









 

 

 

Healthcare Services—7.2%

 

 

 

 

 

27,400

 

AMERIGROUP Corp. (a)

 

 

766,378

 

 

24,000

 

Centene Corp. (a)

 

 

425,520

 

 

6,500

 

Community Health Systems, Inc. (a)

 

 

121,160

 

 

11,700

 

Coventry Health Care, Inc. (a)

 

 

177,021

 

 

87,280

 

DaVita, Inc. (a)

 

 

4,102,160

 

 

60,200

 

Fresenius Medical Care AG & Co. KGaA

 

 

2,693,626

 

 

2,900

 

Laboratory Corp. of America Holdings (a)

 

 

171,680

 

 

7,900

 

Mednax, Inc. (a)

 

 

265,203

 

 

134,000

 

UnitedHealth Group, Inc.

 

 

3,796,220

 

 

 

 

 

 



 

 

 

 

 

 

 

12,518,968

 









 

 

 

Pharmaceuticals—36.2%

 

 

 

 

 

106,740

 

Abbott Laboratories

 

 

5,917,665

 

 

81,990

 

AmerisourceBergen Corp.

 

 

2,977,877

 

 

23,800

 

AstraZeneca Plc

 

 

917,115

 

 

57,200

 

Auxilium Pharmaceuticals, Inc. (a)

 

 

1,748,032

 

 

12,800

 

BioForm Medical, Inc. (a)

 

 

14,848

 

 

99,028

 

BioMarin Pharmaceutical, Inc. (a)

 

 

1,907,279

 

 

158,300

 

Bristol-Myers Squibb Co.

 

 

3,389,203

 

 

26,880

 

Express Scripts, Inc. (a)

 

 

1,445,069

 

 

169,660

 

Gilead Sciences, Inc. (a)

 

 

8,613,638

 

 

149,110

 

Medco Health Solutions, Inc. (a)

 

 

6,699,512

 

 

28,900

 

Medivation, Inc. (a)(c)

 

 

541,875

 

 

49,700

 

Merck & Co., Inc.

 

 

1,418,935

 

 

27,190

 

Novartis AG (ADR)

 

 

1,121,859

 

 

9,100

 

Optimer Pharmaceuticals, Inc. (a)

 

 

95,459

 

 

336,800

 

Pfizer, Inc. (b)

 

 

4,910,544

 

 

14,800

 

Pharmasset, Inc. (a)

 

 

168,720

 

 

61,900

 

Poniard Pharmaceuticals, Inc. (a)

 

 

148,560

 

 

59,730

 

Rigel Pharmaceuticals, Inc. (a)

 

 

417,513

 

 

48,250

 

Roche Holding Ltd.

 

 

6,773,563

 

 

26,200

 

Sanofi-Aventis SA

 

 

1,473,567

 

 

 

 

 

 

 

 

 

Shares

 

Common Stocks

 

Value

 







 

 

 

Pharmaceuticals— (cont'd)

 

 

 

 

 

30,150

 

Teva Pharmaceutical Industries Ltd. (ADR)

 

$

1,249,717

 

 

23,660

 

United Therapeutics Corp. (a)

 

 

1,607,697

 

 

222,032

 

Wyeth

 

 

9,540,715

 

 

 

 

 

 



 

 

 

 

 

 

 

63,098,962

 









 

 

 

Technology—2.7%

 

 

 

 

 

173,500

 

CVS Caremark Corp.

 

 

4,663,680

 









 

 

 

Software—0.4%

 

 

 

 

 

12,300

 

Cerner Corp. (a)

 

 

414,756

 

 

25,240

 

MedAssets, Inc. (a)

 

 

367,494

 

 

 

 

 

 



 

 

 

 

 

 

 

782,250

 









 

 

 

Total Long-Term Investments
(Cost—$160,006,764)—88.3%

 

 

153,990,630

 

















 

 

 

Short-Term Securities

 

 

 

 









 

 

 

Money Market Fund—9.4%

 

 

 

 

 

16,274,834

 

BlackRock Liquidity Funds, TempFund, 1.25%(d)(e)
(Cost—$16,274,834)

 

 

16,274,834

 









 

 

 

Total investments before outstanding options written

 

 

 

 

 

 

 

(Cost—$176,281,598*)—97.6%

 

 

170,265,464

 

















Contracts

 

Options Written

 

 

 

 








 

 

 

Exchange-Traded Call Options Written—(0.8)%

 

 

 

 

 

(275

)

Abbott Laboratories, strike price $55, expires 03/23/09

 

 

(69,438

)

 

(10

)

Acorda Therapeutics, Inc., strike price $30, expires 03/23/09

 

 

(975

)

 

(100

)

Alcon, Inc., strike price $100, expires 02/23/09

 

 

(2,250

)

 

(40

)

Alcon, Inc., strike price $90, expires 03/23/09

 

 

(13,200

)

 

(80

)

Alexion Pharmaceuticals, Inc., strike price $40, expires 02/23/09

 

 

(8,000

)

 

(40

)

Alexion Pharmaceuticals, Inc., strike price $42.50, expires 02/23/09

 

 

(1,600

)

 

(50

)

AMERIGROUP Corp., strike price $35, expires 03/23/09

 

 

(2,000

)

 

(100

)

AmerisourceBergen Corp., strike price $35, expires 02/23/09

 

 

(19,000

)

 

(50

)

AmerisourceBergen Corp., strike price $40, expires 03/23/09

 

 

(2,250

)

 

(100

)

AmerisourceBergen Corp., strike price $40, expires 05/18/09

 

 

(12,500

)

 

(310

)

Amgen, Inc., strike price $55, expires 02/23/09

 

 

(47,895

)

 

(250

)

Amgen, Inc., strike price $57.50, expires 03/23/09

 

 

(40,750

)

 

(160

)

Amgen, Inc., strike price $60, expires 02/23/09

 

 

(3,520

)

 

(200

)

Amgen, Inc., strike price $62.50, expires 02/23/09

 

 

(1,600

)

 

(250

)

Amgen, Inc., strike price $65, expires 04/20/09

 

 

(14,875

)

 

(150

)

Auxilium Pharmaceuticals, Inc., strike price $35, expires 03/23/09

 

 

(15,750

)

 

(500

)

Baxter International, Inc., strike price $57.50, expires 02/23/09

 

 

(107,500

)

 

(80

)

Beckman Coulter, Inc., strike price $50, expires 02/23/09

 

 

(14,000

)

 

(100

)

Beckman Coulter, Inc., strike price $55, expires 02/23/09

 

 

(3,250

)

 

(67

)

Becton Dickinson & Co., strike price $75, expires 02/23/09

 

 

(5,862

)

 

(55

)

Becton Dickinson & Co., strike price $75, expires 03/23/09

 

 

(11,000

)

 

(100

)

Becton Dickinson & Co., strike price $80, expires 06/22/09

 

 

(20,750

)



 

 

 

 

 

 

 

 

1

 

   JANUARY 31, 2009

 



 

 

Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

Contracts

 

Options Written

 

 

Value

 









 

 

 

Exchange-Traded Call Options Written— (cont'd)

 

 

 

 

 

(30

)

BioMarin Pharmaceutical, Inc., strike price $22.50, expires 02/23/09

 

$

(750

)

 

(22

)

BioMarin Pharmaceutical, Inc., strike price $25, expires 04/20/09

 

 

(825

)

 

(620

)

Bristol-Myers Squibb Co., strike price $25, expires 03/23/09

 

 

(11,470

)

 

(100

)

Celera Corp., strike price $12.50, expires 02/23/09

 

 

(1,500

)

 

(100

)

Celera Corp., strike price $12.50, expires 03/23/09

 

 

(1,500

)

 

(80

)

Centene Corp., strike price $20, expires 03/23/09

 

 

(5,800

)

 

(20

)

Cerner Corp., strike price $37.50, expires 06/22/09

 

 

(5,000

)

 

(20

)

Cerner Corp., strike price $40, expires 06/22/09

 

 

(3,400

)

 

(35

)

Coventry Health Care, Inc., strike price $17.50, expires 04/20/09

 

 

(3,062

)

 

(100

)

Coviden Ltd., strike price $40, expires 02/23/09

 

 

(5,750

)

 

(100

)

Coviden Ltd., strike price $40, expires 03/23/09

 

 

(12,000

)

 

(100

)

Coviden Ltd., strike price $40, expires 04/20/09

 

 

(16,500

)

 

(1,225

)

CVS Caremark Corp., strike price $27.50, expires 02/23/09

 

 

(101,063

)

 

(100

)

CVS Caremark Corp., strike price $35, expires 02/23/09

 

 

(500

)

 

(150

)

Cyberonics, Inc., strike price $17.50, expires 04/20/09

 

 

(12,000

)

 

(100

)

Cyberonics, Inc., strike price $20, expires 04/20/09

 

 

(2,750

)

 

(50

)

DaVita, Inc., strike price $55, expires 04/20/09

 

 

(2,375

)

 

(80

)

Express Scripts, Inc., strike price $70, expires 02/23/09

 

 

(400

)

 

(200

)

Genentech, Inc., strike price $90, expires 02/23/09

 

 

(5,500

)

 

(420

)

Genentech, Inc., strike price $90, expires 03/23/09

 

 

(36,750

)

 

(48

)

Genentech, Inc., strike price $95, expires 03/23/09

 

 

(1,320

)

 

(200

)

Genzyme Corp., strike price $72.50, expires 02/23/09

 

 

(20,000

)

 

(100

)

Genzyme Corp., strike price $75, expires 03/23/09

 

 

(13,500

)

 

(100

)

Genzyme Corp., strike price $75, expires 04/20/09

 

 

(22,750

)

 

(100

)

Gilead Sciences, Inc., strike price $52.50, expires 02/23/09

 

 

(11,250

)

 

(100

)

Gilead Sciences, Inc., strike price $55, expires 02/23/09

 

 

(4,250

)

 

(200

)

Gilead Sciences, Inc., strike price $55, expires 03/23/09

 

 

(24,500

)

 

(100

)

Gilead Sciences, Inc., strike price $55, expires 05/18/09

 

 

(25,250

)

 

(100

)

Gilead Sciences, Inc., strike price $57.50, expires 05/18/09

 

 

(17,250

)

 

(100

)

Gilead Sciences, Inc., strike price $60, expires 08/24/09

 

 

(23,500

)

 

(150

)

Halozyme Therapeutics, Inc., strike price $7.50, expires 03/23/09

 

 

(4,875

)

 

(485

)

Immucor, Inc., strike price $30, expires 03/23/09

 

 

(43,650

)

 

(30

)

Integra LifeSciences Holdings Corp., strike price $30, expires 02/23/09

 

 

(1,875

)

 

(124

)

Integra LifeSciences Holdings Corp., strike price $40, expires 03/23/09

 

 

(3,720

)

 

(55

)

InterMune, Inc., strike price $22.50, expires 02/23/09

 

 

(8,112

)

 

 

 

 

 

 

 

 

 

Contracts

 

Options Written

 

 

Value

 









 

 

 

Exchange-Traded Call Options Written— (cont'd)

 

 

 

 

 

(60

)

Johnson & Johnson, strike price $60, expires 03/23/09

 

$

(5,100

)

 

(50

)

Mckesson Corp., strike price $42.50, expires 02/23/09

 

 

(12,750

)

 

(50

)

Mckesson Corp., strike price $45, expires 03/23/09

 

 

(9,750

)

 

(50

)

Mckesson Corp., strike price $45, expires 05/18/09

 

 

(17,000

)

 

(10

)

MedAssets, Inc., strike price $17.50, expires 02/23/09

 

 

(450

)

 

(50

)

MedAssets, Inc., strike price $17.50, expires 03/23/09

 

 

(2,875

)

 

(500

)

Medco Health Solutions, Inc., strike price $45, expires 03/23/09

 

 

(145,000

)

 

(25

)

Medivation, Inc., strike price $20, expires 03/23/09

 

 

(3,500

)

 

(75

)

Medivation, Inc., strike price $22.50, expires 03/23/09

 

 

(4,875

)

 

(710

)

Medtronic, Inc., strike price $35, expires 02/23/09

 

 

(44,375

)

 

(125

)

Merck & Co., Inc., strike price $30, expires 04/20/09

 

 

(16,563

)

 

(150

)

Pfizer, Inc., strike price $16, expires 03/23/09

 

 

(2,925

)

 

(320

)

Pfizer, Inc., strike price $19, expires 03/23/09

 

 

(800

)

 

(300

)

Qiagen NV, strike price $20, expires 02/23/09

 

 

(6,000

)

 

(300

)

Qiagen NV, strike price $20, expires 03/23/09

 

 

(11,250

)

 

(20

)

Rigel Pharmaceuticals, Inc., strike price $10, expires 02/23/09

 

 

(300

)

 

(60

)

Rigel Pharmaceuticals, Inc., strike price $10, expires 03/23/09

 

 

(3,450

)

 

(50

)

St. Jude Medical, Inc., strike price $35, expires 04/20/09

 

 

(17,250

)

 

(50

)

St. Jude Medical, Inc., strike price $40, expires 04/20/09

 

 

(6,000

)

 

(100

)

Teva Pharmaceutical Industries Ltd. (ADR), strike price $45, expires 02/23/09

 

 

(1,500

)

 

(200

)

Teva Pharmaceutical Industries Ltd. (ADR), strike price $45, expires 03/23/09

 

 

(11,500

)

 

(30

)

United Therapeutics Corp., strike price $65, expires 02/23/09

 

 

(13,350

)

 

(30

)

United Therapeutics Corp., strike price $70, expires 03/23/09

 

 

(10,350

)

 

(150

)

UnitedHealth Group, Inc., strike price $27.50, expires 03/23/09

 

 

(36,750

)

 

(100

)

UnitedHealth Group, Inc., strike price $29, expires 02/23/09

 

 

(9,250

)

 

(100

)

UnitedHealth Group, Inc., strike price $31, expires 03/23/09

 

 

(8,500

)

 

(90

)

Vertex Pharmaceuticals, Inc., strike price $35, expires 02/23/09

 

 

(9,900

)

 

(150

)

Vertex Pharmaceuticals, Inc., strike price $40, expires 04/20/09

 

 

(21,000

)

 

(100

)

Wyeth, strike price $42.50, expires 03/23/09

 

 

(15,250

)

 

(100

)

Wyeth, strike price $42.50, expires 04/20/09

 

 

(20,500

)

 

(150

)

Wyeth, strike price $45, expires 02/23/09

 

 

(1,875

)

 

(100

)

Wyeth, strike price $45, expires 04/20/09

 

 

(8,750

)









 

 

 

Total Exchange-Traded Call Options Written

 

 

(1,351,350

)









 

 

 

Exchange-Traded Put Options Written—(0.1)%

 

 

 

 

 

(75

)

Abbott Laboratories, strike price $50, expires 02/23/09

 

 

(1,687

)

 

(20

)

Alcon, Inc., strike price $80, expires 02/23/09

 

 

(3,500

)



 

 

 

 

 

 

 

 

 

 

   JANUARY 31, 2009

2




 

 

Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

Contracts

 

Options Written

 

Value

 








 

 

 

Exchange-Traded Put Options Written— (cont’d)

 

 

 

 

 

(110

)

Amedisys, Inc., strike price $40, expires 02/23/09

 

$

(22,000

)

 

(310

)

Amgen, Inc., strike price $50, expires 02/23/09

 

 

(9,455

)

 

(400

)

Amgen, Inc., strike price $52.50, expires 02/23/09

 

 

(29,200

)

 

(50

)

Becton Dickinson & Co., strike price $60, expires 02/23/09

 

 

(750

)

 

(110

)

CVS Caremark Corp., strike price $25, expires 02/23/09

 

 

(5,500

)

 

(100

)

Genentech, Inc., strike price $75, expires 02/23/09

 

 

(6,500

)

 

(195

)

Genzyme Corp., strike price $62.50, expires 02/23/09

 

 

(11,212

)

 

(75

)

Laboratory Corp. of America Holdings, strike price $60, expires 02/23/09

 

 

(18,938

)

 

(75

)

Medtronic, Inc., strike price $30, expires 02/23/09

 

 

(2,625

)

 

(90

)

UnitedHealth Group, Inc., strike price $27, expires 02/23/09

 

 

(6,975

)

 

(150

)

Vertex Pharmaceuticals, Inc., strike price $25, expires 03/23/09

 

 

(8,625

)









 

 

 

Total Exchange-Traded Put Options Written

 

 

(126,967

)









 

 

 

Over-the-Counter Call Options Written—(0.1)%

 

 

 

 

 

(25,000

)

Amgen, Inc., strike price $62.50, expires 02/20/09, broker Citigroup Global Markets

 

 

(1,703

)

 

(9,000

)

AstraZeneca Plc, strike price 29.74 GBP, expires 03/31/09, broker Morgan Stanley & Co., Inc.

 

 

(7,271

)

 

(200

)

Fresenius Medical Care AG & Co. KGaA, strike price 37 EUR, expires 03/20/09, broker UBS Securities LLC

 

 

(12,286

)

 

(10,000

)

Novartis AG (ADR), strike price $47.54, expires 03/20/09, broker UBS Securities LLC

 

 

(1,248

)

 

(50,000

)

Pfizer, Inc., strike price $19.05, expires 02/20/09, broker Deutsche Bank Securities

 

 

(414

)

 

(150

)

Roche Holding Ltd., strike price 175 CHF, expires 02/20/09, broker Morgan Stanley & Co., Inc.

 

 

(14,171

)

 

(7,000

)

Sanofi-Aventis SA, strike price 47 EUR, expires 02/16/09, broker Citigroup Global Markets

 

 

(4,800

)

 

(12,000

)

Smith & Nephew Plc, strike price 5.35 GBP, expires 04/14/09, broker Deutsche Bank Securities

 

 

(4,330

)

 

(20,000

)

Wyeth, strike price $39.04, expires 02/20/09, broker UBS Securities LLC

 

 

(78,600

)









 

 

 

Total Over-the-Counter Call Options Written

 

 

(124,823

)









 

 

 

Over-the-Counter Put Options Written—(0.0)%

 

 

 

 

 

(75

)

Fresenius Medical Care AG & Co. KGaA, strike price 33 EUR, expires 02/20/09, broker Morgan Stanley & Co., Inc.

 

 

(2,214

)

 

(125

)

Roche Holding Ltd., strike price 160 CHF, expires 02/20/09, broker Morgan Stanley & Co., Inc.

 

 

(43,540

)









 

 

 

Total Over-the-Counter Put Options Written

 

 

(45,754

)









 

 

 

Total Options Written
(Premiums Received $2,363,430)—(1.0)%

 

 

(1,648,894

)









 

 

 

Total investments net of outstanding options written—96.7%

 

 

168,616,570

 

 

 

 

Other Assets in Excess of Liabilities—3.3%

 

 

5,822,804

 

 

 

 

 

 



 

 

 

 

Net Assets—100.0%

 

$

174,439,374

 

 

 

 

 

 



 

 

 

*

The cost and unrealized appreciation (depreciation) of investments as of January 31, 2009, as computed for federal income tax purposes, were as follows:


 

 

 

 

 

 

 

Aggregate cost

 

$

177,737,124

 

 

 

 



 

 

Gross unrealized appreciation

 

$

8,533,416

 

 

Gross unrealized depreciation

 

 

(16,005,076

)

 

 

 



 

 

Net unrealized depreciation

 

$

(7,471,660

)

 

 

 



 

 

 

 


(a)

Non-income producing security.

 

 

(b)

Security, or a portion thereof, pledged as collateral for outstanding options written.

 

 

(c)

Security, or a portion of security, is on loan.

 

 

(d)

Represents current yield as of report date.

 

 

(e)

Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the Investment Company Act of 1940 were as follows:


 

 

 

 

 

 

 

 

 

 







 

Affiliate

 

Net Activity

 

Income

 

 







 

BlackRock Liquidity Funds, TempFund

 

 

16,274,834

 

$

12,909

 

 

BlackRock Liquidity Series, LLC, Money Market Series

 

 

(2,226,500

)**

$

1,199

 

 









 

 

**

Represents net sale cost.

 

 

Forward foreign exchange contracts as of January 31, 2009 were as follows:


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Currency
Purchased

 

Currency
Sold

 

Settlement
Date

 

Unrealized
Appreciation
(Depreciation)

 







 

AUD

 

297,000

 

USD

 

198,937

 

 

2/02/09

 

$

(10,223

)

 

GBP

 

78,000

 

USD

 

112,406

 

 

2/03/09

 

 

626

 

 

USD

 

6,557

 

EUR

 

5,000

 

 

2/02/09

 

 

155

 

 















 

Total

 

 

 

 

 

 

 

 

 

 

$

(9,442

)

 

 

 

 

 

 

 

 

 

 

 

 



 


KEY TO ABBREVIATIONS

 

 

 

 

 

 

ADR

American Depositary Receipt

AUD

Australian Dollar

CHF

Swiss Franc

EUR

Euro

GBP

British Pound

USD

U.S. Dollar


 

 

 

Effective November 1, 2008, the Trust adopted Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” (“FAS 157”). FAS 157 clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. Various inputs are used in determining the fair value of investments, which are as follows:

 

 

Level 1 - price quotations in active markets/exchanges for identical securities



 

 

 

 

 

 

 

 

3

 

   JANUARY 31, 2009

 



 

 

Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

Level 2 - other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks, and default rates) or other market-corroborated inputs)

 

 

Level 3 - unobservable inputs based on the best information available in the circumstance, to the extent observable inputs are not available (including the Trust’s own assumption used in determining the fair value of investments)

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and other significant accounting policies, please refer to the Trust’s most recent financial statements as contained in its annual report.

The following table summarizes the inputs used as of January 31, 2009 in determining the fair valuation of the Trust’s investments:

 

 

 

 

 

 

 

 

 

 

 







Valuation
Inputs

 

Investments in
Securities

 

Other Financial Instruments**

 







 

 

Assets

 

Assets

 

Liabilities

 

 

 


 


 


 

Level 1

 

$

157,083,839

 

$

 

$

(1,478,317

)

Level 2

 

 

13,181,625

 

 

781

 

 

(180,800

)

Level 3

 

 

 

 

 

 

 












Total

 

$

170,265,464

 

$

781

 

$

(1,659,117

)

 

 











 

 

**

Other financial instruments are options and forward foreign exchange contracts.



 

 

 

 

 

 

 

 

 

 

   JANUARY 31, 2009

4



Item 2 – Controls and Procedures

2(a) – The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.
   
2(b) – There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3 – Exhibits

  Certifications – Attached hereto
     
  Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
     
  BlackRock Health Sciences Trust
     
  By: /s/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer of
    BlackRock Health Sciences Trust
     
  Date: March 25, 2009
     
  Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
     
  By: /s/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer (principal executive officer) of
    BlackRock Health Sciences Trust
     
  Date: March 25, 2009
     
  By: /s/ Neal J. Andrews  
    Neal J. Andrews
    Chief Financial Officer (principal financial officer) of
    BlackRock Health Sciences Trust
     
  Date: March 25, 2009