Plug Power Inc.
CH ˙ SWX ˙ US72919P2020
SecurityCH:PLUG / Plug Power Inc.
InstitutionHrt Financial Lp
Latest Disclosed Ownership211,300 shares
Latest Disclosed Value $ 477
Hrt Financial Lp ownership in PLUG / Plug Power Inc.

On May 14, 2026 - Hrt Financial Lp filed a 13F-HR form disclosing ownership of 211,300 shares of Plug Power Inc. (CH:PLUG) valued at $477 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 68,100 shares of Plug Power Inc..

Hrt Financial Lp has a history of taking positions in derivatives of the underlying security (PLUG) in the form of stock options. The firm currently holds call options representing 63,500 of underlying shares valued at $94 USD and put options representing 211,300 of underlying shares valued at $477 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CH:PLUG / Plug Power Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F PLUG PWR PUT 72919P952 211,300 143,200 210.28 0 0.0012
2026-05-14 2026-03-31 13F PLUG PWR COM NEW 72919P202 11,866,225 11,798,125 27 0.0662
2026-02-12 2025-12-31 13F PLUG POWER PUT 72919P952 68,100 34,000 99.71 0 -100.00 0.0004
2026-02-12 2025-12-31 13F PLUG POWER COM NEW 72919P202 110,749 0
2025-11-14 2025-09-30 13F PLUG POWER COM NEW 72919P202 9,800,717 9,737,217 15,334.20 23 0.0840
2025-08-14 2025-06-30 13F PLUG POWER CALL 72919P902 63,500 63,500 -4.59 0 0.0004
2025-08-14 2025-06-30 13F PLUG POWER COM NEW 72919P202 12,889,883 19
2025-05-15 2025-03-31 13F PLUG POWER COM NEW 72919P202 66,554 -1,305,503 -95.15 0 -100.00 0.0006
2025-02-14 2024-12-31 13F PLUG POWER COM NEW 72919P202 1,372,057 1,372,057 3 0.0151
2024-08-12 2024-06-30 13F PLUG POWER CALL 72919P902 0 -22,100 -100.00 0 0.0000
2024-05-13 2024-03-31 13F PLUG POWER CALL 72919P902 22,100 3,900 21.43 0 -100.00 0.0005
2024-05-13 2024-03-31 13F PLUG POWER COM NEW 72919P202 1,042,646 4
2024-02-09 2023-12-31 13F PLUG POWER COM NEW 72919P202 372,218 8,299 2.28 2 -50.00 0.0122
2023-11-13 2023-09-30 13F PLUG POWER COM NEW 72919P202 363,919 345,719 1,899.55 3 0.0276
2023-08-11 2023-06-30 13F PLUG POWER CALL 72919P902 18,200 18,200 0 0.0018
2023-05-12 2023-03-31 13F PLUG POWER COM NEW 72919P202 0 -221,002 -100.00 0 -100.00
2023-02-10 2022-12-31 13F PLUG POWER COM NEW 72919P202 221,002 186,902 548.10 3 -99.72 0.0386
2022-11-14 2022-09-30 13F PLUG POWER PUT 72919P952 34,100 34,100 -80.22 716 -74.93 0.0077
2022-11-14 2022-09-30 13F PLUG POWER COM NEW 72919P202 19,565 411
2022-08-12 2022-06-30 13F PLUG POWER OM NEW 72919P202 172,390 172,390 2,856 0.0313
2022-05-16 2022-03-31 13F PLUG POWER PUT 72919P952 0 -14,100 -100.00 0 -100.00
2022-05-16 2022-03-31 13F PLUG POWER CALL 72919P902 0 -63,800 -100.00 0 -100.00
2022-05-16 2022-03-31 13F PLUG POWER COM NEW 72919P202 0 -14,100 0
2022-02-14 2021-12-31 13F PLUG POWER PUT 72919P952 14,100 -62,100 -81.50 398 -79.55 0.0023
2022-02-14 2021-12-31 13F PLUG POWER CALL 72919P902 63,800 35,300 123.86 1,801 76.40 0.0104
2022-02-14 2021-12-31 13F PLUG POWER COM NEW 72919P202 51,037 1,440
2021-11-15 2021-09-30 13F PLUG POWER PUT 72919P952 76,200 38,400 101.59 1,946 43.72 0.0119
2021-08-16 2021-06-30 13F PLUG POWER OM NEW 72919P202 735,540 697,740 1,845.87 25,148 1,757.31 0.2306
2021-05-17 2021-03-31 13F PLUG POWER PUT 72919P952 37,800 37,800 1,354 0.0137
2021-05-17 2021-03-31 13F PLUG POWER CALL 72919P902 28,500 -20,100 -41.36 1,021 56.84 0.0103
2021-02-16 2020-12-31 13F PLUG POWER OM NEW 72919P202 296,973 248,373 511.06 10,070 1,446.85 0.2029
2020-11-13 2020-09-30 13F PLUG POWER CALL 72919P902 48,600 48,600 651 0.0189
2020-02-14 2019-12-31 13F PLUG POWER COM NEW 72919P202 0 -77,932 -100.00 0 -100.00
2019-11-14 2019-09-30 13F PLUG POWER COM NEW 72919P202 77,932 77,932 204 0.0096
2019-08-14 2019-06-30 13F PLUG POWER COM NEW 72919P202 0 -99,739 -100.00 0 -100.00
2019-05-14 2019-03-31 13F PLUG POWER COM NEW 72919P202 99,739 99,739 239 0.0371
2018-08-15 2018-06-30 13F PLUG POWER COM NEW 72919P202 0 -27,832 -100.00 0 -100.00
2018-05-14 2018-03-31 13F PLUG POWER COM NEW 72919P202 27,832 27,832 52 0.0249
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-14 2025-06-30 13F PLUG POWER CALL 63,500 -4.59 0 n/a n/a n/a
2024-08-12 2024-06-30 13F PLUG POWER CALL 0 -100.00 0 n/a n/a n/a
2024-05-13 2024-03-31 13F PLUG POWER CALL 22,100 21.43 0 -100.00 n/a n/a n/a
2023-08-11 2023-06-30 13F PLUG POWER CALL 18,200 0 n/a n/a n/a
2022-05-16 2022-03-31 13F PLUG POWER CALL 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F PLUG POWER CALL 63,800 123.86 1,801 76.40 n/a n/a n/a
2021-05-17 2021-03-31 13F PLUG POWER CALL 28,500 -41.36 1,021 56.84 n/a n/a n/a
2020-11-13 2020-09-30 13F PLUG POWER CALL 48,600 651 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F PLUG PWR PUT 211,300 210.28 0 n/a n/a n/a
2026-02-12 2025-12-31 13F PLUG POWER PUT 68,100 99.71 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F PLUG POWER PUT 34,100 -80.22 716 -74.93 n/a n/a n/a
2022-05-16 2022-03-31 13F PLUG POWER PUT 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F PLUG POWER PUT 14,100 -81.50 398 -79.55 n/a n/a n/a
2021-11-15 2021-09-30 13F PLUG POWER PUT 76,200 101.59 1,946 43.72 n/a n/a n/a
2021-05-17 2021-03-31 13F PLUG POWER PUT 37,800 1,354 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.