Plug Power Inc.
MX ˙ BMV ˙ US72919P2020
SecurityMX:PLUG / Plug Power Inc.
InstitutionArkadios Wealth Advisors
Latest Disclosed Ownership55,382 shares
Latest Disclosed Value $ 125,164
Arkadios Wealth Advisors ownership in PLUG / Plug Power Inc.

On May 18, 2026 - Arkadios Wealth Advisors filed a 13F-HR form disclosing ownership of 55,382 shares of Plug Power Inc. (MX:PLUG) valued at $125,164 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 57,816 shares of Plug Power Inc.. This represents a change in shares of -4.21% during the quarter.

Arkadios Wealth Advisors 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 17,500 of underlying shares valued at $39,550 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.

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)
2026-05-18 2026-03-31 13F PLUG PWR INC COM Stock 72919P202 55,382 -2,434 -4.21 125 10.62 0.0013
2026-02-13 2025-12-31 13F PLUG POWER INC COM Stock 72919P202 57,816 -2,221 -3.70 114 -18.71 0.0022
2025-10-29 2025-09-30 13F PLUG POWER INC COM Stock 72919P202 60,037 1,259 2.14 140 59.77 0.0034
2025-08-04 2025-06-30 13F PLUG POWER INC COM Stock 72919P202 58,778 -3,309 -5.33 88 4.82 0.0026
2025-05-08 2025-03-31 13F PLUG POWER INC COM Stock 72919P202 62,087 5 0.01 84 -37.12 0.0032
2025-01-15 2024-12-31 13F PLUG POWER INC COM Stock 72919P202 62,082 29,062 88.01 132 78.38 0.0072
2024-10-24 2024-09-30 13F PLUG POWER INC COM Stock 72919P202 33,020 5,075 18.16 75 13.85 0.0042
2024-07-29 2024-06-30 13F PLUG POWER INC COM Stock 72919P202 27,945 3,945 16.44 65 -20.73 0.0044
2024-04-30 2024-03-31 13F PLUG POWER INC COM Stock 72919P202 24,000 5,300 28.34 83 -2.38 0.0064
2024-01-24 2023-12-31 13F PLUG POWER INC COM Stock 72919P202 18,700 4,700 33.57 84 -20.75 0.0071
2023-10-13 2023-09-30 13F PLUG POWER INC COM Stock 72919P202 14,000 4,000 40.00 106 2.91 0.0101
2023-07-26 2023-06-30 13F PLUG POWER INC COM Stock 72919P202 10,000 10,000 104 0.0121
2022-02-03 2021-12-31 13F PLUG POWER INC COM Stock 72919P202 0 -400 -100.00 0 0.0000
2021-10-19 2021-09-30 13F PLUG POWER INC COM Stock 72919P202 400 -950 -70.37 0 0.0014
2021-07-28 2021-06-30 13F PLUG POWER INC COM Stock 72919P202 1,350 -3,176 -70.17 0 0.0056
2021-04-26 2021-03-31 13F PLUG POWER INC COM Stock 72919P202 4,526 -2,200 -32.71 0 0.0267
2021-02-09 2020-12-31 13F PLUG POWER INC COM Stock 72919P202 6,726 6,726 0 0.0478
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
(%)
2026-05-18 2026-03-31 13F PLUG PWR INC COM Stock Call 17,500 0.00 40 14.71 n/a n/a n/a
2026-02-13 2025-12-31 13F PLUG POWER INC COM Stock Call 17,500 34 n/a n/a n/a
2024-04-30 2024-03-31 13F PLUG POWER INC COM Stock Call 0 -100.00 0 n/a n/a n/a
2024-01-24 2023-12-31 13F PLUG POWER INC COM Stock Call 4,800 0 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.