Plug Power Inc.
MX ˙ BMV ˙ US72919P2020
SecurityMX:PLUG / Plug Power Inc.
InstitutionWestside Investment Management, Inc.
Latest Disclosed Ownership4,000 shares
Latest Disclosed Value $ 9,040
Westside Investment Management, Inc. reports 14.29% increase in ownership of PLUG / Plug Power Inc.

On May 4, 2026 - Westside Investment Management, Inc. filed a 13F-HR form disclosing ownership of 4,000 shares of Plug Power Inc. (MX:PLUG) valued at $9,040 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 3,500 shares of Plug Power Inc.. This represents a change in shares of 14.29% 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)
2026-05-04 2026-03-31 13F PLUG POWER COM 72919P202 4,000 500 14.29 9 50.00 0.0007
2026-01-23 2025-12-31 13F PLUG POWER COM 72919P202 3,500 1,000 40.00 7 20.00 0.0011
2025-11-04 2025-09-30 13F PLUG POWER COM 72919P202 2,500 -1,000 -28.57 6 0.00 0.0009
2025-08-05 2025-06-30 13F PLUG POWER COM 72919P202 3,500 0 0.00 5 25.00 0.0010
2025-04-25 2025-03-31 13F PLUG POWER COM 72919P202 3,500 0 0.00 5 -42.86 0.0010
2025-01-17 2024-12-31 13F PLUG POWER COM 72919P202 3,500 500 16.67 7 16.67 0.0016
2024-11-20 2024-09-30 13F PLUG POWER COM 72919P202 3,000 -2,035 -40.42 7 -45.45 0.0014
2024-07-17 2024-06-30 13F PLUG POWER COM 72919P202 5,035 500 11.03 12 -26.67 0.0027
2024-04-19 2024-03-31 13F PLUG POWER COM 72919P202 4,535 -100 -2.16 16 -25.00 0.0037
2024-01-12 2023-12-31 13F PLUG POWER COM 72919P202 4,635 -900 -16.26 21 -52.38 0.0053
2023-11-15 2023-09-30 13F PLUG POWER COM 72919P202 5,535 1,000 22.05 42 -10.64 0.0121
2023-07-14 2023-06-30 13F PLUG POWER COM 72919P202 4,535 0 0.00 47 -11.32 0.0133
2023-05-17 2023-03-31 13F PLUG POWER COM 72919P202 4,535 0 0.00 53 0.0156
2023-01-31 2022-12-31 13F PLUG POWER COM 72919P202 4,535 0 0.00 0 0.0001
2022-11-09 2022-09-30 13F PLUG POWER COM 72919P202 4,535 -500 -9.93 0 0.0002
2022-07-15 2022-06-30 13F PLUG POWER COM 72919P202 5,035 0 0.00 0 0.0002
2022-04-25 2022-03-31 13F PLUG POWER COM 72919P202 5,035 1,335 36.08 0 0.0003
2022-02-15 2021-12-31 13F PLUG POWER COM 72919P202 3,700 0 0.00 0 0.0002
2021-10-27 2021-09-30 13F PLUG POWER COM 72919P202 3,700 0 0.00 0 0.0002
2021-07-28 2021-06-30 13F PLUG POWER COM 72919P202 3,700 0 0.00 0 0.0003
2021-04-14 2021-03-31 13F PLUG POWER COM 72919P202 3,700 -670 -15.33 0 0.0003
2021-01-15 2020-12-31 13F PLUG POWER COM 72919P202 4,370 0 0.00 0 0.0004
2020-10-14 2020-09-30 13F PLUG POWER COM 72919P202 4,370 -790 -15.31 0 0.0000
2020-07-21 2020-06-30 13F PLUG POWER COM 72919P202 5,160 0 0.00 0 133.33 0.0000
2020-04-16 2020-03-31 13F PLUG POWER COM 72919P202 5,160 0 0.00 0 63.64 0.0000
2019-07-24 2019-06-30 13F PLUG POWER COM 72919P202 5,160 0 0.00 0 -100.00 0.0000
2019-02-05 2018-12-31 13F PLUG POWER COM 72919P202 5,160 0 0.00 6 -33.33 0.0023
2018-11-08 2018-09-30 13F PLUG POWER COM 72919P202 5,160 0 0.00 10 -10.00 0.0032
2018-08-13 2018-06-30 13F PLUG POWER COM 72919P202 5,160 750 17.01 10 42.86 0.0037
2018-04-16 2018-03-31 13F PLUG POWER COM 72919P202 4,410 0 0.00 8 -30.00 0.0043
2018-02-15 2017-12-31 13F PLUG POWER COM 72919P202 4,410 1,160 35.69 10 11.11 0.0056
2017-11-13 2017-09-30 13F PLUG POWER COM 72919P202 3,250 0 0.00 9 50.00 0.0056
2017-09-14 2017-06-30 13F/A-1 PLUG POWER COM 72919P202 3,250 0 0.00 7 -14.29 0.0043
2017-08-15 2017-06-30 13F PLUG POWER COM 72919P202 3,250 0 7
2017-05-11 2017-03-31 13F PLUG POWER COM 72919P202 3,250 750 30.00 7 133.33 0.0035
2017-05-11 2016-12-31 13F PLUG POWER COM 72919P202 2,500 2,500 3 0.0021
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.