Plug Power Inc.
MX ˙ BMV ˙ US72919P2020
SecurityMX:PLUG / Plug Power Inc.
InstitutionState Street Corp
Latest Disclosed Ownership36,549,102 shares
Latest Disclosed Value $ 82,600,971
State Street Corp reports 13.30% increase in ownership of PLUG / Plug Power Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 36,549,102 shares of Plug Power Inc. (MX:PLUG) valued at $82,600,971 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 32,258,283 shares of Plug Power Inc.. This represents a change in shares of 13.30% during the quarter.

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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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)
2026-05-15 2026-03-31 13F PLUG PWR COM NEW 72919P202 36,549,102 4,290,819 13.30 82,601 29.98 0.0029
2026-02-13 2025-12-31 13F PLUG POWER COM NEW 72919P202 32,258,283 7,416,943 29.86 63,549 9.79 0.0021
2025-11-14 2025-09-30 13F PLUG POWER COM NEW 72919P202 24,841,340 4,444,992 21.79 57,880 90.46 0.0020
2025-08-14 2025-06-30 13F PLUG POWER COM NEW 72919P202 20,396,348 -1,786,013 -8.05 30,391 1.48 0.0011
2025-05-15 2025-03-31 13F PLUG POWER COM NEW 72919P202 22,182,361 -113,902 -0.51 29,946 -36.94 0.0012
2025-02-14 2024-12-31 13F PLUG POWER COM NEW 72919P202 22,296,263 2,323,921 11.64 47,491 5.22 0.0019
2024-11-14 2024-09-30 13F PLUG POWER COM NEW 72919P202 19,972,342 -2,896,463 -12.67 45,137 -15.29 0.0018
2024-08-14 2024-06-30 13F PLUG POWER COM NEW 72919P202 22,868,805 445,340 1.99 53,284 -30.92 0.0023
2024-05-15 2024-03-31 13F PLUG POWER COM NEW 72919P202 22,423,465 961,046 4.48 77,137 -20.13 0.0034
2024-02-14 2023-12-31 13F PLUG POWER COM NEW 72919P202 21,462,419 5,692,728 36.10 96,581 -19.42 0.0047
2023-11-14 2023-09-30 13F PLUG POWER COM NEW 72919P202 15,769,691 -351,352 -2.18 119,850 -28.45 0.0066
2023-08-14 2023-06-30 13F PLUG POWER COM NEW 72919P202 16,121,043 718,729 4.67 167,498 -7.21 0.0088
2023-05-15 2023-03-31 13F PLUG POWER COM NEW 72919P202 15,402,314 1,052,866 7.34 180,514 1.70 0.0102
2023-05-15 2022-12-31 13F/A-99 PLUG POWER COM NEW 72919P202 14,349,448 340,521 2.43 177,503 -39.69 0.0104
2023-05-15 2022-12-31 13F PLUG POWER COM NEW 72919P202 14,349,448 340,521 177,503 0.0104
2022-11-15 2022-09-30 13F PLUG POWER COM NEW 72919P202 14,008,927 826,142 6.27 294,328 34.74 0.0186
2022-08-15 2022-06-30 13F PLUG POWER COM NEW 72919P202 13,182,785 -494,687 -3.62 218,439 -44.18 0.0131
2022-05-16 2022-03-31 13F PLUG POWER COM NEW 72919P202 13,677,472 348,875 2.62 391,312 4.00 0.0194
2022-02-14 2021-12-31 13F PLUG POWER COM NEW 72919P202 13,328,597 266,761 2.04 376,266 12.79 0.0178
2021-11-15 2021-09-30 13F PLUG POWER COM NEW 72919P202 13,061,836 536,446 4.28 333,599 -22.10 0.0176
2021-08-16 2021-06-30 13F PLUG POWER COM NEW 72919P202 12,525,390 439,992 3.64 428,243 -1.13 0.0226
2021-07-09 2021-03-31 13F/A-1 PLUG POWER COM NEW 72919P202 12,085,398 3,906,682 47.77 433,141 56.18 0.0248
2021-05-17 2021-03-31 13F PLUG POWER COM NEW 72919P202 12,085,398 3,906,682 433,141 0.0248
2021-02-16 2020-12-31 13F PLUG POWER COM NEW 72919P202 8,178,716 320,996 4.09 277,340 163.20 0.0170
2020-11-10 2020-09-30 13F PLUG POWER COM NEW 72919P202 7,857,720 183,697 2.39 105,372 67.25 0.0072
2020-08-14 2020-06-30 13F PLUG POWER COM NEW 72919P202 7,674,023 966,069 14.40 63,004 165.32 0.0046
2020-06-19 2020-03-31 13F/A-1 PLUG POWER COM NEW 72919P202 6,707,954 1,551,234 30.08 23,746 45.73 0.0021
2020-05-11 2020-03-31 13F PLUG POWER COM NEW 72919P202 6,707,954 1,551,234 23,746 2,085.3769
2020-02-06 2019-12-31 13F PLUG POWER COM NEW 72919P202 5,156,720 311,708 6.43 16,295 27.88 0.0011
2019-11-14 2019-09-30 13F PLUG POWER COM NEW 72919P202 4,845,012 478,614 10.96 12,742 29.70 0.0009
2019-08-14 2019-06-30 13F PLUG POWER COM NEW 72919P202 4,366,398 278,412 6.81 9,824 0.13 0.0007
2019-05-15 2019-03-31 13F PLUG POWER COM NEW 72919P202 4,087,986 -16,247 -0.40 9,811 92.79 0.0008
2019-02-12 2018-12-31 13F PLUG POWER COM NEW 72919P202 4,104,233 -174,303 -4.07 5,089 -38.03 0.0005
2018-11-09 2018-09-30 13F PLUG POWER Common equity shares 72919P202 4,278,536 173,085 4.22 8,212 -1.01 0.0006
2018-08-14 2018-06-30 13F PLUG POWER Common equity shares 72919P202 4,105,451 -5,930 -0.14 8,296 6.77 0.0007
2018-05-15 2018-03-31 13F PLUG POWER Common equity shares 72919P202 4,111,381 123,098 3.09 7,770 -17.46 0.0007
2018-02-14 2017-12-31 13F PLUG POWER Common equity shares 72919P202 3,988,283 243,839 6.51 9,414 -3.64 0.0008
2017-11-14 2017-09-30 13F PLUG POWER Common equity shares 72919P202 3,744,444 1,878 0.05 9,770 27.96 0.0008
2017-08-14 2017-06-30 13F PLUG POWER Common equity shares 72919P202 3,742,566 477,438 14.62 7,635 69.52 0.0007
2017-05-15 2017-03-31 13F PLUG POWER Common equity shares 72919P202 3,265,128 281,106 9.42 4,504 25.88 0.0004
2017-02-09 2016-12-31 13F PLUG POWER Common equity shares 72919P202 2,984,022 199,300 7.16 3,578 -24.90 0.0003
2017-01-13 2016-09-30 13F/A-1 PLUG POWER Common equity shares 72919P202 2,784,722 25,022 0.91 4,764 -7.21 0.0005
2016-11-14 2016-09-30 13F PLUG POWER Common equity shares 72919P202 2,784,722 4,764
2016-08-12 2016-06-30 13F PLUG POWER Common equity shares 72919P202 2,759,700 31,380 1.15 5,134 -8.22 0.0006
2016-05-20 2016-03-31 13F/A-1 PLUG POWER Common equity shares 72919P202 2,728,320 100,883 3.84 5,594 0.85 0.0006
2016-05-12 2016-03-31 13F PLUG POWER Common equity shares 72919P202 2,728,320 5,594
2016-02-16 2015-12-31 13F PLUG POWER Common equity shares 72919P202 2,627,437 49,971 1.94 5,547 17.57 0.0006
2015-11-16 2015-09-30 13F PLUG POWER Common equity shares 72919P202 2,577,466 -49,409 -1.88 4,718 -26.68 0.0005
2015-08-13 2015-06-30 13F PLUG POWER Common equity shares 72919P202 2,626,875 2,831 0.11 6,435 -5.34 0.0007
2015-05-15 2015-03-31 13F PLUG POWER Common equity shares 72919P202 2,624,044 137,990 5.55 6,798 -8.86 0.0007
2015-02-11 2014-12-31 13F PLUG POWER Common equity shares 72919P202 2,486,054 28,509 1.16 7,459 -33.86 0.0007
2014-11-12 2014-09-30 13F/A-1 PLUG POWER Common equity shares 72919P202 2,457,545 25,829 1.06 11,278 -0.91 0.0012
2014-11-10 2014-09-30 13F PLUG POWER Common equity shares 72919P202 2,457,545 11,278
2014-08-12 2014-06-30 13F PLUG POWER Common equity shares 72919P202 2,431,716 2,371,616 3,946.12 11,382 2,565.57 0.0012
2014-05-15 2014-03-31 13F/A-1 PLUG POWER Common equity shares 72919P202 60,100 -30,000 -33.30 427 207.19 0.0000
2014-05-13 2014-03-31 13F PLUG POWER Common equity shares 72919P202 60,100 427
2014-02-06 2013-12-31 13F/A-1 PLUG POWER Common equity shares 72919P202 90,100 90,100 139 0.0000
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.