Company · Ownership research

PLUG POWER INC PLUG

CIK 0001093691 · CUSIP 72919P202

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 72919P202 (PLUG), not CUSIP 72919P902 (PLUG), CUSIP 72919P952 (PLUG), CUSIP 72919P103 (PLUG), and does not merge CUSIPs.

This page lists the top 20 of 476 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$343.73M 152,093,275 shares	0.01%	+34.91M(+29.80%)Added	SEC filing ↗ May 13, 2026	▾
02	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history	$141.36M 62,550,438 shares	0.00%	—	SEC filing ↗ May 15, 2026	▾
03	VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history	$134.70M 59,603,806 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
04	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$110.65M 48,958,500 shares	0.09%	+26.85M(+121.40%)Added	SEC filing ↗ May 15, 2026	▾
05	UBS Group AG CIK 1610520 · View history	$94.00M 41,593,479 shares	0.02%	+16.12M(+63.30%)Added	SEC filing ↗ May 5, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$82.60M 36,549,102 shares	0.00%	+4.29M(+13.30%)Added	SEC filing ↗ May 15, 2026	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$78.46M 34,708,817 shares	0.00%	+3.44M(+11.00%)Added	SEC filing ↗ May 15, 2026	▾
08	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$62.69M 27,738,500 shares	0.10%	+13.69M(+97.40%)Added	SEC filing ↗ May 14, 2026	▾
09	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$61.91M 27,395,936 shares	0.05%	-976.06K(-3.40%)Reduced	SEC filing ↗ May 15, 2026	▾
10	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$40.97M 18,134,913 shares	0.01%	+12.82M(+241.20%)Added	SEC filing ↗ May 7, 2026	▾
11	HRT FINANCIAL LP CIK 1475597 · View history	$26.82M 11,866,225 shares	0.07%	+11.76M(+10,614.50%)Added	SEC filing ↗ May 14, 2026	▾
12	NORTHERN TRUST CORP CIK 73124 · View history	$26.41M 11,687,839 shares	0.00%	+1.71M(+17.20%)Added	SEC filing ↗ May 14, 2026	▾
13	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$25.52M 11,293,747 shares	0.00%	+307.66K(+2.80%)Added	SEC filing ↗ May 15, 2026	▾
14	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$23.12M 10,228,774 shares	0.02%	+3.26M(+46.80%)Added	SEC filing ↗ May 15, 2026	▾
15	Nuveen, LLC CIK 1871926 · View history	$22.38M 9,904,153 shares	0.01%	+647.73K(+7.00%)Added	SEC filing ↗ Apr 30, 2026	▾
16	Legal & General Group Plc CIK 764068 · View history	$20.74M 9,177,330 shares	0.00%	-55.10K(-0.60%)Reduced	SEC filing ↗ May 8, 2026	▾
17	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$20.72M 9,167,207 shares	0.00%	+559.03K(+6.50%)Added	SEC filing ↗ May 15, 2026	▾
18	VANGUARD FIDUCIARY TRUST CO CIK 933478 · Amended · View history	$20.26M 8,965,362 shares	0.01%	—	SEC filing ↗ May 8, 2026	▾
19	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. CIK 1705339 · View history	$19.96M 8,891,401 shares	0.03%	+119.13K(+1.40%)Added	SEC filing ↗ May 15, 2026	▾
20	BARCLAYS PLC CIK 312069 · View history	$19.70M 8,714,960 shares	0.01%	+6.75M(+343.60%)Added	SEC filing ↗ May 15, 2026	▾

Showing 20 / 476 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

476

Cancelled or null records excluded

Disclosed shares

755,018,517

Not deduplicated across managers

Disclosed value

$1.70B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

PLUG POWER INC · Q1 2026

Explore all 476 reporting institutions.

This page includes 20 of 476 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 476 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"72919P202","quarter":"2026Q1","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.