Across its top 20 institutional holders, PLUG's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 30/100).

Quarterly Activity

Recent Activity

+$1.2B

Total Buy Value

$420.7M

Total Sell Value

New buy65

Trim109

Add165

Sold out56

230

Net Buyers

165

Net Sellers

Smart Money Convergence

PLUG does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

Filings (90d)

$161K

Total Est. Value

50K shares

Planned Shares

Last Filed 2026-06-08

Filer	Title/Relationship	Filing Date	Planned Shares	Est. Value
HELMER MAUREEN O	Director	2026-06-08	50K shares	$161K

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

Filings (14d)

Data as of 2026-07-13

2026-07-13

Plug Power (PLUG) filed an 8-K on July 9, 2026, disclosing two key developments. It amended the Gateway Agreement for its New York project, extending the closing date to March 31, 2027, and fixing the purchase price at $142 million. The amendment releases a $6.5 million deposit to Plug Power and requires an additional $10 million deposit from the buyer for an interim closing. It also entered into a new agreement for a Texas project with a base price of $50 million and a potential earnout of up to $26.5 million based on electrical load capacity. The filing includes Item 2.02 on results of operations, but no specific financials are provided.

View Full Filing (SEC EDGAR)

View all Form 8-K filings

CUSIP

72919P202

FAQ

Who are the top institutional investors holding PLUG POWER INC (PLUG)?

Major stakeholders currently include BlackRock, Inc. ($343.7M), Vanguard Capital Management LLC ($141.4M), Vanguard Portfolio Management LLC ($134.7M). Based on the latest 13F filings, there are a total of 473 tracked investment funds and institutions maintaining positions in PLUG.

What is the overall institutional sentiment toward PLUG recently?

Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $411.4M, driven by 230 managers accumulating shares while 165 reduced their exposure.

Which institutions have been selling or reducing their PLUG positions?

In the latest period, 109 funds trimmed their holdings, and 56 managers completely exited their positions. The aggregate reported sell value was $420.7M.

Are there any notable investors adding PLUG to their portfolios?

Yes, buying activity remains notable. 65 institutions opened new positions in {ticker}, and 165 existing holders added to their shares. The total reported buy value for the quarter amounted to $1.2B.