Ballard Power Systems Inc. (Nasdaq: BLDP), an SEC filer in Electrical Industrial Apparatus, closed at $2.25, -3.8%, on 2026-08-28, with a market cap of $704M as of 2026-08-27. Institutional ownership, earnings history and filed financials are on the tabs below.
Returns use ADJUSTED closes (splits + dividends).
Volume as VALUE TRADED — close × volume, in USD.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | BLDP | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | −8.3% | −8.2% | +13.1% | +40.5% | +85.0% | −38.2% | −31.4% | −15.7% | — | — | — | — | −11.4% | +13.4% | −24.8pp |
| 2025 | −18.1% | −9.6% | −10.6% | +10.9% | +5.7% | +23.3% | +15.1% | +10.4% | +34.7% | +31.2% | −20.4% | −10.6% | +53.0% | +17.7% | +35.3pp |
| 2024 | −11.4% | −4.3% | −11.5% | −5.4% | +17.5% | −27.2% | +1.3% | −19.3% | −2.2% | −12.2% | −5.7% | +11.4% | −55.1% | +24.9% | −80.0pp |
| 2023 | +36.3% | −12.9% | −2.1% | −20.6% | −5.4% | +4.3% | +8.3% | −11.0% | −12.6% | −9.3% | +5.4% | +5.4% | −22.8% | +26.2% | −48.9pp |
| 2022 | −17.2% | +9.8% | +1.9% | −28.7% | −12.4% | −13.3% | +27.5% | −2.9% | −21.5% | −7.4% | +7.6% | −21.5% | −61.9% | −18.2% | −43.7pp |
| 2021 | +46.0% | −18.6% | −12.5% | −10.1% | −20.8% | +4.6% | −10.8% | +3.9% | −16.4% | +29.0% | −16.3% | −17.2% | −46.3% | +28.7% | −75.1pp |
| 2020 | +37.5% | −9.8% | −14.5% | +33.5% | +6.2% | +42.7% | −7.7% | +16.7% | −9.0% | −2.2% | +39.0% | +14.0% | +225.9% | +18.3% | +207.6pp |
| 2019 | +46.0% | +2.6% | −15.9% | +10.3% | +15.7% | +6.3% | −0.7% | +11.1% | +8.7% | +12.9% | +20.1% | +8.3% | +200.4% | +31.2% | +169.2pp |
| 2018 | −16.0% | +0.9% | −5.1% | −9.6% | −7.5% | −4.0% | +7.0% | +16.1% | +21.5% | −13.5% | −19.9% | −19.8% | −45.8% | −4.6% | −41.2pp |
| 2017 | +12.7% | +2.7% | +16.2% | +47.3% | −15.3% | +4.7% | +1.0% | +6.5% | +50.0% | +6.8% | −4.6% | −7.5% | +167.3% | +21.7% | +145.6pp |
Month-end over prior month-end; a blank cell is no return.
Basis. Both columns share one basis, so Δ is like-for-like.
End-of-day closes; a “ytd” or “part” year is not a full year.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Years ⓘ | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 |
| Positive ⓘ | 57% | 57% | 43% | 48% | 38% | 43% | 52% | 45% | 38% | 48% | 29% | 38% |
| Median | +9.7% | +2.6% | −2.1% | +0.0% | −7.5% | −0.9% | +1.0% | −0.4% | −6.2% | −2.2% | −8.6% | −7.5% |
| Best | +46.0% | +74.5% | +47.1% | +47.3% | +85.0% | +42.7% | +54.4% | +16.7% | +52.9% | +31.2% | +39.0% | +22.8% |
| Worst | −21.7% | −18.6% | −15.9% | −28.7% | −25.6% | −38.2% | −35.4% | −25.5% | −24.4% | −22.2% | −26.3% | −48.9% |
| vs SPY ⓘ | +5.5pp | +1.3pp | −2.3pp | −1.4pp | −9.5pp | −2.2pp | −1.1pp | +1.1pp | −5.3pp | +0.3pp | −9.1pp | −8.8pp |
253 monthly observations · 2005–2026 · benchmark SPY
