Plug Power Inc.
MX ˙ BMV ˙ US72919P2020
SecurityMX:PLUG / Plug Power Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership230,598 shares
Latest Disclosed Value $ 521,096
Advisor Group Holdings, Inc. ownership in PLUG / Plug Power Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 230,598 shares of Plug Power Inc. (MX:PLUG) valued at $521,096 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 222,041 shares of Plug Power Inc.. This represents a change in shares of 3.85% during the quarter.

Advisor Group Holdings, Inc. 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 0 of underlying shares valued at $0 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

MX: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)
2026-05-15 2026-03-31 13F PLUG PWR COM NEW 72919P202 230,598 8,557 3.85 521 19.22 0.0004
2026-02-17 2025-12-31 13F PLUG POWER COM NEW 72919P202 222,041 26,839 13.75 437 18.75 0.0006
2025-11-14 2025-09-30 13F PLUG POWER COM NEW 72919P202 195,202 -4,243 -2.13 369 23.91 0.0005
2025-09-04 2025-06-30 13F/A-1 PLUG POWER COM NEW 72919P202 199,445 -59,523 -22.98 297 -14.90 0.0005
2025-08-13 2025-06-30 13F PLUG POWER COM NEW 72919P202 223,650 -35,318 464 0.0005
2025-05-12 2025-03-31 13F PLUG POWER COM NEW 72919P202 258,968 45,177 21.13 350 -23.30 0.0008
2025-06-06 2024-12-31 13F/A-1 PLUG POWER COM NEW 72919P202 213,791 12,749 6.34 455 0.22 0.0010
2025-02-07 2024-12-31 13F PLUG POWER COM NEW 72919P202 137,389 -63,653 309 0.0008
2024-11-13 2024-09-30 13F PLUG POWER COM NEW 72919P202 201,042 7,522 3.89 454 0.89 0.0010
2024-08-13 2024-06-30 13F PLUG POWER COM NEW 72919P202 193,520 -181,187 -48.35 451 -65.06 0.0011
2024-05-10 2024-03-31 13F PLUG POWER COM NEW 72919P202 374,707 45,343 13.77 1,289 -13.09 0.0029
2024-02-12 2023-12-31 13F PLUG POWER COM NEW 72919P202 329,364 -763,253 -69.86 1,482 -82.15 0.0026
2023-11-13 2023-09-30 13F PLUG POWER COM NEW 72919P202 1,092,617 419,639 62.36 8,304 18.63 0.0123
2023-08-21 2023-06-30 13F/A-1 PLUG POWER COM NEW 72919P202 672,978 151,519 29.06 6,999 15.59 0.0126
2023-08-10 2023-06-30 13F PLUG POWER COM NEW 72919P202 673,072 151,613 6,999 0.0019
2023-05-12 2023-03-31 13F PLUG POWER COM NEW 72919P202 521,459 150,405 40.53 6,055 31.95 0.0114
2023-02-10 2022-12-31 13F PLUG POWER COM NEW 72919P202 371,054 -39,842 -9.70 4,590 -46.85 0.0093
2022-11-14 2022-09-30 13F PLUG POWER COM NEW 72919P202 410,896 -181,671 -30.66 8,634 -12.18 0.0197
2022-08-10 2022-06-30 13F PLUG POWER COM NEW 72919P202 592,567 -137,041 -18.78 9,832 -52.89 0.0217
2022-05-04 2022-03-31 13F PLUG POWER COM NEW 72919P202 729,608 53,591 7.93 20,869 9.31 0.0405
2022-02-03 2021-12-31 13F PLUG POWER COM NEW 72919P202 676,017 37,147 5.81 19,091 17.00 0.0361
2021-11-05 2021-09-30 13F PLUG POWER COM NEW 72919P202 638,870 81,896 14.70 16,317 -14.28 0.0340
2021-08-02 2021-06-30 13F PLUG POWER COM NEW 72919P202 556,974 201,940 56.88 19,035 49.66 0.0412
2021-05-13 2021-03-31 13F PLUG POWER COM NEW 72919P202 355,034 90,774 34.35 12,719 41.94 0.0306
2021-02-10 2020-12-31 13F PLUG POWER COM NEW 72919P202 264,260 -83,157 -23.94 8,961 92.38 0.0239
2020-11-12 2020-09-30 13F PLUG POWER COM NEW 72919P202 347,417 109,516 46.03 4,658 138.63 0.0139
2020-08-14 2020-06-30 13F PLUG POWER COM NEW 72919P202 237,901 774 0.33 1,952 132.94 0.0066
2020-05-18 2020-03-31 13F PLUG POWER COM NEW 72919P202 237,127 237,127 838 0.0034
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
(%)
2022-05-04 2022-03-31 13F PLUG POWER INC CALL COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-03 2021-12-31 13F PLUG POWER INC CALL COM NEW Call 4 8 n/a n/a n/a
2021-11-05 2021-09-30 13F PLUG POWER INC CALL COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-02 2021-06-30 13F PLUG POWER INC CALL COM NEW Call 12 0.00 1 -50.00 n/a n/a n/a
2021-05-13 2021-03-31 13F PLUG POWER INC CALL COM NEW Call 12 1,100.00 2 0.00 n/a n/a n/a
2021-02-10 2020-12-31 13F PLUG POWER INC CALL COM NEW Call 1 2 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.