Who Owns Plug Power Inc. (PLUG)?Hedge Fund & Institutional Holders
Institutional Holders
21
as of Q4 2025
Total Institutional Value
$8.000000797300044e+61T
% of Float Held
4.082822817256584e+93%
QoQ Change in Holders
+4 / -0
Price History
PLUG — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| SlateStone Wealth, LLC | New Position | +29K | +$57K |
| EVERETT HARRIS & CO /CA/ | New Position | +27K | +$0 |
| Ancora Advisors LLC | New Position | +10 | +$0 |
| HRT FINANCIAL LP | New Position | +68K | +$0 |
| Caitlin John, LLC | Increased | +10 | +$-3.9M |
Top Institutional Holders(Q4 2025)
| # | Fund | Shares | Value | % of Portfolio | Type |
|---|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | 4,436,300 | $8.0B | 4.51% | Call |
| 2 | GROUP ONE TRADING LLC | 4,047,600 | $8.0B | 13.92% | Call |
| 3 | IMC-Chicago, LLC | 2,267,100 | $4.5B | 1.62% | Call |
| 4 | GROUP ONE TRADING LLC | 1,930,900 | $3.8B | 6.64% | Put |
| 5 | SIMPLEX TRADING, LLC | 1,643,200 | $3.0B | 1.69% | Put |
| 6 | IMC-Chicago, LLC | 1,059,000 | $2.1B | 0.76% | Put |
| 7 | Marathon Trading Investment Management LLC | 75,000 | $147.0M | 0.00% | Call |
| 8 | BAHL & GAYNOR INC | 10,000 | $19.0M | 0.10% | Share |
| 9 | Caitlin John, LLC | 70 | $2.0M | 0.00% | Share |
| 10 | SlateStone Wealth, LLC | 29,077 | $57K | 0.00% | Share |
| 11 | SG Americas Securities, LLC | 50,000 | $28K | 0.00% | Put |
| 12 | JPMORGAN CHASE & CO | 135,200 | $0 | 0.00% | Put |
| 13 | NATIONAL BANK OF CANADA /FI/ | 40 | $0 | 0.00% | Put |
| 14 | NATIONAL BANK OF CANADA /FI/ | 2,677 | $0 | 0.00% | Put |
| 15 | NATIONAL BANK OF CANADA /FI/ | 1,000 | $0 | 0.00% | Put |
| 16 | HUNTINGTON NATIONAL BANK | 1 | $0 | 0.00% | Share |
| 17 | Hurley Capital, LLC | 417 | $0 | 0.00% | Call |
| 18 | Ancora Advisors LLC | 10 | $0 | 0.00% | Share |
| 19 | EVERETT HARRIS & CO /CA/ | 26,744 | $0 | 0.00% | Share |
| 20 | JPMORGAN CHASE & CO | 74,800 | $0 | 0.00% | Call |
| 21 | HRT FINANCIAL LP | 68,100 | $0 | 0.00% | Share |
PLUG Institutional Ownership History
| Quarter | Holders | Total Value | Change |
|---|---|---|---|
| Q4 2025 | 7 | $21.1M | +4 |
| Q3 2025 | 3 | $29.2M | -3 |
| Q2 2025 | 6 | $55.1M | +1 |
| Q1 2025 | 5 | $55.0M | +2 |
| Q4 2024 | 3 | $21.4M | +0 |
| Q3 2024 | 3 | $22.1M | +0 |
| Q2 2024 | 3 | $23.1M | +0 |
| Q1 2024 | 3 | $34.2M | — |
Similar Stocks by Institutional Ownership
As of Q4 2025, 21 institutional investors hold PLUG (Plug Power Inc.). The largest holder is SIMPLEX TRADING, LLC with $8.0B in shares. This quarter, 4 institutions opened new positions and 0 closed their positions.
Frequently Asked Questions
How many hedge funds own PLUG?
As of Q4 2025, 21 institutional investors report holding PLUG (Plug Power Inc.) in their 13F filings.
Who is the largest institutional holder of PLUG?
The largest institutional holder of PLUG is SIMPLEX TRADING, LLC with $8.0B in shares.
Is institutional ownership of PLUG increasing or decreasing?
This quarter, 4 institutions opened new positions in PLUG and 0 closed their positions.