Plug Power Inc: which funds bought and sold

Institutions that bought and sold Plug Power shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 260 institutions that filed 13F reports for both quarters added to or opened positions in Plug Power, and 150 cut or closed them. Together they added a net 59.2M shares, +7.8% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 12.3M shares (−8.4%); index fund managers were net buyers of 45.3M shares (+11.9%). 77 opened a new position and 42 sold out entirely.

Bought, Q2 2026 260 institutions, 77 of them new holders Sold, Q2 2026 150 institutions, 42 of them sold out

Net change, all compared +59.2M shares (+7.8%)

Net change, active managers −12.3M shares (−8.4%), 25 bought, 21 sold

Buyers versus sellers

institutions compared, 533

260 bought 123 150 sold

Active managers and hedge funds 25 bought · 21 sold · −12.3M

Index fund managers 9 bought · 2 sold · +45.3M

Other institutions 226 bought · 127 sold · +26.2M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+31.9M +21.0%	184.0M	$499M
Citadel Advisors LLC Hedge fund	+23.3M +2712.4%	24.1M	$65.4M
Handelsbanken Fonder AB	+15.5M +446.9%	19.0M	$51.5M
Vanguard Portfolio Management LLC Index funds	+6.6M +11.0%	66.2M	$179M
Price T Rowe Associates Inc Active manager	+5.5M +395.2%	6.9M	$18.6M
BNP Paribas Asset Management Holding S.A.	+4.9M +2089.6%	5.1M	$13.9M
Erste Asset Management Gmbh	+4.2M New position	4.2M	$10.9M
Jupiter Asset Management Ltd Active manager	+4.0M +99.6%	8.1M	$21.9M
Qube Research & Technologies Ltd Hedge fund	+3.5M New position	3.5M	$9.5M
Millennium Management LLC Hedge fund	+3.5M +34.0%	13.7M	$37.1M
Mirae Asset Global Investments Co., Ltd.	+3.4M +751.8%	3.9M	$10.5M
Goldman Sachs Group Inc	+3.2M +35.1%	12.4M	$33.6M
Jpmorgan Chase & Co	+2.8M +123.9%	5.1M	$13.4M
Mirae Asset Global Etfs Holdings Ltd.	+2.8M +31.4%	11.7M	$31.5M
Barclays PLC	+2.2M +25.5%	10.9M	$29.6M
State Street Corp Index funds	+2.2M +6.1%	38.8M	$105M
Quadrature Capital Ltd Hedge fund	+2.1M +501.4%	2.5M	$6.7M
Morgan Stanley	+2.0M +34.6%	7.7M	$20.9M
Geode Capital Management, LLC Index funds	+1.8M +5.3%	36.6M	$99.1M
Headlands Technologies LLC	+1.8M New position	1.8M	$4.8M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	+23.3M +2712.4%	24.1M	$65.4M
Price T Rowe Associates Inc Active manager	+5.5M +395.2%	6.9M	$18.6M
Jupiter Asset Management Ltd Active manager	+4.0M +99.6%	8.1M	$21.9M
Qube Research & Technologies Ltd Hedge fund	+3.5M New position	3.5M	$9.5M
Millennium Management LLC Hedge fund	+3.5M +34.0%	13.7M	$37.1M
Quadrature Capital Ltd Hedge fund	+2.1M +501.4%	2.5M	$6.7M
Boothbay Fund Management, LLC Hedge fund	+638K New position	638K	$1.7M
Squarepoint Ops LLC Hedge fund	+507K New position	507K	$1.4M
Lighthouse Investment Partners, LLC Hedge fund	+405K +150.0%	675K	$1.8M
Alliancebernstein L.P. Active manager	+243K +18.2%	1.6M	$3.6M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
D. E. Shaw & Co., Inc. Hedge fund	−27.0M −55.2%	21.9M	$59.5M
Renaissance Technologies LLC Hedge fund	−16.0M −57.5%	11.8M	$31.9M
HRT Financial LP	−11.9M Sold out	0	—
UBS Group AG	−8.5M −20.4%	33.1M	$89.8M
Two Sigma Investments, LP Hedge fund	−4.8M −17.5%	22.6M	$61.3M
American Century Companies Inc Active manager	−3.0M −97.8%	68K	$184,852
Invesco Ltd.	−1.9M −23.4%	6.3M	$17M
BNP Paribas Financial Markets	−1.7M −49.5%	1.7M	$4.7M
Nuveen, LLC	−1.2M −12.2%	8.7M	$23.6M
FMR LLC Active manager	−1.2M −23.0%	4.0M	$10.9M
Caxton Associates LLP Hedge fund	−1.0M Sold out	0	—
Stifel Financial Corp	−1.0M −30.9%	2.3M	$6.1M
Voleon Capital Management LP Hedge fund	−874K −42.2%	1.2M	$3.2M
Citigroup Inc	−849K −48.3%	908K	$2.5M
Bank Of America Corp	−804K −31.4%	1.8M	$4.7M
UBS Am, A Distinct Business Unit Of UBS Asset Management Americas LLC	−784K −21.8%	2.8M	$7.6M
Marex Group Ltd	−717K −51.5%	674K	$1.8M
Xtx Topco Ltd	−665K Sold out	0	—
Susquehanna International Group, LLP	−619K −15.3%	3.4M	$9.3M
Exoduspoint Capital Management, LP Hedge fund	−617K −64.7%	336K	$911,227

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
D. E. Shaw & Co., Inc. Hedge fund	−27.0M −55.2%	21.9M	$59.5M
Renaissance Technologies LLC Hedge fund	−16.0M −57.5%	11.8M	$31.9M
Two Sigma Investments, LP Hedge fund	−4.8M −17.5%	22.6M	$61.3M
American Century Companies Inc Active manager	−3.0M −97.8%	68K	$184,852
FMR LLC Active manager	−1.2M −23.0%	4.0M	$10.9M
Caxton Associates LLP Hedge fund	−1.0M Sold out	0	—
Voleon Capital Management LP Hedge fund	−874K −42.2%	1.2M	$3.2M
Exoduspoint Capital Management, LP Hedge fund	−617K −64.7%	336K	$911,227
Gotham Asset Management, LLC Hedge fund	−559K −24.4%	1.7M	$4.7M
Algert Global LLC Hedge fund	−556K −54.2%	469K	$1.3M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Erste Asset Management Gmbh	4.2M	$10.9M
Qube Research & Technologies LtdHedge fund	3.5M	$9.5M
Headlands Technologies LLC	1.8M	$4.8M
Landscape Capital Management, L.L.C.	1.7M	$4.7M
Boothbay Fund Management, LLCHedge fund	638K	$1.7M
Squarepoint Ops LLCHedge fund	507K	$1.4M
State Of New Jersey Common Pension Fund D	425K	$1.2M
Fideuram Asset Management (Ireland) Dac	300K	$987,960
Cantor Fitzgerald, L. P.	295K	$800,534
Caisse Des Depots Et Consignations	271K	$733,936

Sold out

largest by value

Institution	Shares	Value March 31, 2026
HRT Financial LP	11.9M	$26.8M
Caxton Associates LLPHedge fund	1.0M	$2.3M
Xtx Topco Ltd	665K	$1.5M
Abacus Wealth Partners, LLC	122K	$276,254
Engineers Gate Manager LPHedge fund	89K	$201,653
Walleye Capital LLCHedge fund	85K	$191,940
Old Mission Capital LLC	85K	$190,709
Brevan Howard Capital Management LPHedge fund	76K	$172,110
Drw Securities, LLC	75K	$161,682
Jefferies Financial Group Inc.	67K	$150,742

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 500
Ten largest holders: 62.6%
Index fund managers: 52.2%
Active managers and hedge funds: 16.5%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	25	21	11	7	−12.3M	−8.4%
Index fund managers	9	2	0	0	+45.3M	+11.9%
Other institutions	226	127	66	35	+26.2M	+11.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Plug Power.

Only managers that filed a holdings report for both quarters are compared (533 here). 16 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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