NKTR · Nektar Therapeutics · Holdings

$41.17 +0.37 (+0.91%) At close · Oct 9

Russell 2000 member Rebalance outlook locked

Market Cap

$1.41B

34.14M

Volume · Oct 9 1.17M Avg daily vol (3M) 1.08M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 242

Total Value: $2,644,367,403

Total Shares: 38,323,604

Showing 1–100 of 255 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 243 13F filers

Top Holder

13.3%

of institutional value

Top 5

39.4%

of institutional value

Top 10

53.9%

of institutional value

HHI

444

Broadly held

Showing 100 of 255

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$353,791,494

13.38%

5,067,920

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	2,751,585	$192,088,148	54.3%	Defined
FIDELITY MANAGEMENT TRUST CO	2,316,284	$161,699,786	45.7%	Defined
STRATEGIC ADVISERS LLC	51	$3,560	0.0%	Defined

BlackRock, Inc.

$205,370,611

7.77%

2,941,851

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	77,989	$5,444,412	2.7%	Sole
BlackRock Investment Management (Australia) Ltd	91	$6,352	0.0%	Sole
BlackRock Asset Management Canada Ltd	183	$12,775	0.0%	Sole
BlackRock Investment Management, LLC	102,286	$7,140,585	3.5%	Sole
BLACKROCK ADVISORS LLC	174,855	$12,206,627	5.9%	Sole
BlackRock Fund Advisors	1,396,291	$97,475,074	47.5%	Sole
BlackRock Institutional Trust Company, N.A.	1,095,896	$76,504,499	37.3%	Sole
BlackRock Japan Co. Ltd	1,094	$76,372	0.0%	Sole
BlackRock Fund Managers Ltd.	5,392	$376,415	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	29,666	$2,070,983	1.0%	Sole
BlackRock (Netherlands) B.V.	1,848	$129,008	0.1%	Sole
BlackRock Asset Management Ireland Ltd	41,634	$2,906,469	1.4%	Sole
BlackRock (Luxembourg) S.A.	7,826	$546,333	0.3%	Sole
BlackRock Asset Management Schweiz AG	5,127	$357,915	0.2%	Sole
Aperio Group, LLC	1,673	$116,792	0.1%	Sole

Two Seas Capital LP

$202,582,238

7.66%

3,345,978

BVF INC/IL

$166,920,945

6.31%

2,391,075

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BVF PARTNERS L P/IL	2,391,075	$166,920,945	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$104,495,028

3.95%

1,496,849

TWO SIGMA INVESTMENTS, LP

$83,911,899

3.17%

1,202,004

Vestal Point Capital, LP

$69,810,000

2.64%

1,000,000

MORGAN STANLEY

$65,381,250

2.47%

936,560

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	17	$1,186	0.0%	Defined
MORGAN STANLEY & CO. LLC	166,219	$11,603,748	17.7%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	615,809	$42,989,626	65.8%	Defined
MORGAN STANLEY INVESTMENT MANAGEMENT INC	106,263	$7,418,220	11.3%	Defined
MORGAN STANLEY SMITH BARNEY LLC	42,158	$2,943,049	4.5%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	6,094	$425,421	0.7%	Defined

STATE STREET CORP

$63,504,690

2.40%

909,679

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	909,679	$63,504,690	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$61,523,971

2.33%

881,306

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	125,720	$8,776,513	14.3%	Defined
Held directly	755,586	$52,747,458	85.7%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$57,502,497

2.17%

823,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	823,700	$57,502,497	100.0%	Other

Prosight Management, LP

$56,546,100

2.14%

810,000

ARMISTICE CAPITAL, LLC

$50,542,440

1.91%

724,000

GILDER GAGNON HOWE & CO LLC

$41,946,944

1.59%

600,873

MILLENNIUM MANAGEMENT LLC

$33,377,557

1.26%

478,120

BRAIDWELL LP

$33,063,202

1.25%

473,617

Sofinnova Investments, Inc.

$32,933,775

1.25%

471,763

Woodline Partners LP

$32,871,783

1.24%

470,875

ORBIMED ADVISORS LLC

$32,485,804

1.23%

465,346

UBS Group AG

$29,906,603

1.13%

428,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	74	$5,165	0.0%	Defined
UBS AG	417,426	$29,140,509	97.4%	Defined
UBS Switzerland AG	10,900	$760,929	2.5%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$27,540,045

1.04%

394,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	394,500	$27,540,045	100.0%	Other

EMERALD ADVISERS, LLC

$27,236,929

1.03%

390,158

LORD, ABBETT & CO. LLC

$26,641,171

1.01%

381,624

VANGUARD PORTFOLIO MANAGEMENT LLC

$24,331,577

0.92%

348,540

DAFNA Capital Management LLC

$22,226,107

0.84%

318,380

NORTHERN TRUST CORP

$21,538,547

0.81%

308,531

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	285,441	$19,926,635	92.5%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	17,755	$1,239,476	5.8%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	5,335	$372,436	1.7%	Other

Deep Track Capital, LP

$20,943,000

0.79%

300,000

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$19,893,825

0.75%

284,971

22NW, LP

$19,624,638

0.74%

281,115

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$19,475,384

0.74%

278,977

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	278,977	$19,475,384	100.0%	Other

PRIMECAP MANAGEMENT CO/CA/

$19,047,658

0.72%

272,850

BARCLAYS PLC

$18,315,490

0.69%

262,362

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	257,396	$17,968,814	98.1%	Defined
BARCLAYS CAPITAL INC.	4,966	$346,676	1.9%	Defined

Nearwater Capital Markets, Ltd

$18,255,315

0.69%

261,500

EMERALD MUTUAL FUND ADVISERS TRUST

$17,842,528

0.67%

255,587

ADAR1 Capital Management, LLC

$17,046,485

0.64%

244,184

Creek Drive Management Group LLC

$16,963,830

0.64%

243,000

SEVEN GRAND MANAGERS, LLC

$16,754,400

0.63%

240,000

DEUTSCHE BANK AG\

$16,742,601

0.63%

239,831

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	583	$40,699	0.2%	Defined
DWS Investments UK Ltd	239,248	$16,701,902	99.8%	Defined

VANGUARD FIDUCIARY TRUST CO

$16,724,730

0.63%

239,575

GOLDMAN SACHS GROUP INC

$15,950,886

0.60%

228,490

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	143,415	$10,011,801	62.8%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	85,075	$5,939,085	37.2%	Defined

NORGES BANK

$15,030,093

0.57%

215,300

Bronte Capital Management Pty Ltd.

$13,852,677

0.52%

198,434

CITADEL ADVISORS LLC

$12,251,655

0.46%

175,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	175,500	$12,251,655	100.0%	Defined

GREAT POINT PARTNERS LLC

$12,216,750

0.46%

175,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JAY JEFFREY R joint	175,000	$12,216,750	100.0%	Defined

Caption Management, LLC

$11,944,491

0.45%

171,100

MILLENNIUM MANAGEMENT LLC

$11,867,700

0.45%

170,000

AMERIPRISE FINANCIAL INC

$11,584,340

0.44%

165,941

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	158,288	$11,050,085	95.4%	Defined
Ameriprise Financial Services, LLC	7,653	$534,255	4.6%	Defined

CITADEL ADVISORS LLC

$11,434,878

0.43%

163,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	163,800	$11,434,878	100.0%	Defined

CITADEL ADVISORS LLC

$11,151,937

0.42%

159,747

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	142,962	$9,980,177	89.5%	Defined
Held directly	16,785	$1,171,760	10.5%	Defined

Quinn Opportunity Partners LLC

$10,686,235

0.40%

153,076

Rhenman & Partners Asset Management AB

$9,860,662

0.37%

141,250

Qube Research & Technologies Ltd

$9,111,671

0.34%

130,521

LMR Partners LLP

$9,075,300

0.34%

130,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LMR Partners LLC	130,000	$9,075,300	100.0%	Sole

Soleus Capital Management, L.P.

$8,960,951

0.34%

128,362

Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A.

$8,570,364

0.32%

122,767

Stonepine Capital Management, LLC

$8,422,855

0.32%

120,654

SummitTX Capital, L.P.

$7,883,922

0.30%

112,934

Jump Financial, LLC

$7,494,173

0.28%

107,351

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	751	$52,427	0.7%	Defined
Leap GP LLC joint	106,600	$7,441,746	99.3%	Defined

APEIRON CAPITAL Ltd

$7,429,948

0.28%

106,431

CITIGROUP INC

$7,173,675

0.27%

102,760

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	102,760	$7,173,675	100.0%	Defined

ING GROEP NV

$6,981,000

0.26%

100,000

LMR Partners LLP

$6,981,000

0.26%

100,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
LMR Partners LLC	100,000	$6,981,000	100.0%	Sole

Nuveen, LLC

$6,746,158

0.26%

96,636

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	1,761	$122,935	1.8%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	23,120	$1,614,007	23.9%	Defined
TEACHERS ADVISORS, LLC joint	71,755	$5,009,216	74.3%	Defined

Bank of New York Mellon Corp

$6,706,016

0.25%

96,061

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	33,040	$2,306,522	34.4%	Defined
The Bank of New York Mellon	63,006	$4,398,448	65.6%	Defined
BNY Mellon, NA joint	14	$977	0.0%	Defined
Held directly	1	$69	0.0%	Defined

Susquehanna Portfolio Strategies, LLC

$6,685,703

0.25%

95,770

Militia Capital Management LLC

$6,282,900

0.24%

90,000

ACT CAPITAL MANAGEMENT, LLC

$6,234,033

0.24%

89,300

Russell Investments Group, Ltd.

$6,219,998

0.24%

89,099

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	49,057	$3,424,668	55.1%	Defined
Russell Investments Capital, LLC	22,786	$1,590,690	25.6%	Defined
Russell Investments France SAS	6,386	$445,806	7.2%	Defined
Russell Investments Trust Company	10,870	$758,834	12.2%	Defined

Tetragon Partners GP Ltd

$6,073,190

0.23%

86,996

READYSTATE ASSET MANAGEMENT LP

$5,941,529

0.22%

85,110

Birchview Capital, LP

$5,654,610

0.21%

81,000

Invesco Ltd.

$5,574,746

0.21%

79,856

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	5,255	$366,851	6.6%	Defined
Invesco Trust Co joint	13,745	$959,538	17.2%	Defined
Invesco Capital Management LLC	60,856	$4,248,357	76.2%	Defined

GROUP ONE TRADING LLC

$4,912,599

0.19%

70,371

ALGERT GLOBAL LLC

$4,686,345

0.18%

67,130

Moody Aldrich Partners LLC

$4,477,264

0.17%

64,135

Swiss National Bank

$4,300,296

0.16%

61,600

F/m Investments LLC

$4,229,438

0.16%

60,585

BANK OF AMERICA CORP /DE/

$4,227,763

0.16%

60,561

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	60,561	$4,227,763	100.0%	Defined

ExodusPoint Capital Management, LP

$4,084,373

0.15%

58,507

Trexquant Investment LP

$3,956,830

0.15%

56,680

Cambridge Investment Research Advisors, Inc.

$3,922,344

0.15%

56,186

K2 PRINCIPAL FUND, L.P.

$3,522,961

0.13%

50,465

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$3,286,095

0.12%

47,072

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	41	$2,862	0.1%	Defined
UBS Asset Management Switzerland AG	42,582	$2,972,649	90.5%	Sole
Held directly	4,449	$310,584	9.5%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$3,188,920

0.12%

45,680

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	45,680	$3,188,920	100.0%	Defined

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO

$3,113,526

0.12%

44,600

RHUMBLINE ADVISERS

$3,008,392

0.11%

43,094

LANDSCAPE CAPITAL MANAGEMENT, L.L.C.

$2,925,177

0.11%

41,902

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Landscape High Leverage Fund, LP	7,818	$545,774	18.7%	Defined
LANDSCAPE OFFSHORE HL FUND LTD.	21,728	$1,516,831	51.9%	Defined
Held directly	12,356	$862,572	29.5%	Sole

Voleon Capital Management LP

$2,850,900

0.11%

40,838

Anson Funds Management LP

$2,829,748

0.11%

40,535

Atom Investors LP

$2,828,631

0.11%

40,519

Burkehill Global Management, LP

$2,792,400

0.11%

40,000

NOMURA HOLDINGS INC

$2,792,400

0.11%

40,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA SECURITIES INTERNATIONAL INC	40,000	$2,792,400	100.0%	Defined

IRIDIAN ASSET MANAGEMENT LLC/CT

$2,708,767

0.10%

38,802

NOMURA HOLDINGS INC

$2,698,645

0.10%

38,657

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA SECURITIES INTERNATIONAL INC	38,657	$2,698,645	100.0%	Defined

Jefferies Financial Group Inc.

$2,664,298

0.10%

38,165

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jefferies Financial Services, Inc.	38,165	$2,664,298	100.0%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$2,575,779

0.10%

36,897

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	36,897	$2,575,779	100.0%	Sole

ALLIANCEBERNSTEIN L.P.

$2,513,160

0.10%

36,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	36,000	$2,513,160	100.0%	Defined

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$2,430,784

0.09%

34,820

ALPS ADVISORS INC

$2,386,664

0.09%

34,188

FRED ALGER MANAGEMENT, LLC

$2,350,712

0.09%

33,673

Key facts CIK 906709 CUSIP 640268306 13F (30d) 8 filings 8 filers Visit website Investor relations