William Frels - Mairs & Power
Period:    Q1 2026
Portfolio date:    31 Mar 2026
No. of stocks:    245
Portfolio value:    $9,786,094,433
Holdings Activity Buys Sells    History
Holding/activity history for  Plug Power Inc. (PLUG)
← All PLUG superinvestors
Period Shares % of Portfolio Activity % Change to Portfolio Price Value Filing
2026   Q1 10,000 <0.01 $2.26 $22,600 SEC
2025   Q4 10,000 <0.01 $1.97 $19,700 SEC
2025   Q3 10,000 <0.01 $2.33 $23,300 SEC
2025   Q2 10,000 <0.01 $1.49 $14,900 SEC
2025   Q1 10,000 <0.01 $1.35 $13,500 SEC
2024   Q4 10,000 <0.01 $2.13 $21,300 SEC
2024   Q3 10,000 <0.01 $2.26 $22,600 SEC
2024   Q2 10,000 <0.01 $2.33 $23,300 SEC
2024   Q1 10,000 <0.01 Buy <0.01 $2.26–5.14 · VW $3.79i $34,400 SEC
2023   Q4 0 0.00 Sell 100.00% <0.01 $3.22–7.90 · VW $5.08i SEC
2023   Q3 10,000 <0.01 $7.60 $76,000 SEC
2023   Q2 10,000 <0.01 $10.39 $103,900 SEC
2023   Q1 10,000 <0.01 $11.72 $117,200 SEC
2022   Q4 10,000 <0.01 $12.37 $123,700 SEC
2022   Q3 10,000 <0.01 $21.00 $210,000 SEC
2022   Q2 10,000 <0.01 $16.60 $166,000 SEC
2022   Q1 10,000 <0.01 $28.60 $286,000 SEC
2021   Q4 10,000 <0.01 $28.20 $282,000 SEC
2021   Q3 10,000 <0.01 $25.50 $255,000 SEC
2021   Q2 10,000 <0.01 $34.20 $342,000 SEC
2021   Q1 10,000 <0.01 Reduce 50.00% <0.01 $30.10–75.49 · VW $50.22i $358,000 SEC
2020   Q4 20,000 0.01 Reduce 4.19% <0.01 $13.27–37.51 · VW $23.51i $678,000 SEC
2020   Q3 20,875 <0.01 Reduce 30.42% <0.01 $7.07–14.35 · VW $10.97i $280,000 SEC
2020   Q2 30,000 <0.01 $8.20 $246,000 SEC
2020   Q1 30,000 <0.01 $3.53 $106,000 SEC
2019   Q4 30,000 <0.01 $3.17 $95,000 SEC
2019   Q3 30,000 <0.01 $2.63 $79,000 SEC
2019   Q2 30,000 <0.01 Buy <0.01 $1.86–2.87 · VW $2.47i $68,000 SEC
Price snapshot:
Current price$2.17
Avg. buy price$3.44
+/- since buy-36.92%
52-week low$1.39
52-week high$4.58