Estimated market cap $421.10MShares outstanding from the company’s latest SEC filing (all share classes, each priced at its own close; ADRs converted to ADS) × last close from Tiingo. Updated daily. This figure: shares as of Dec 31, 2025, last close Nov 13, 2026.300.78M shares, shares as of Dec 31, 2025CIK 1453015The SEC’s Central Index Key, the number it uses to identify every company and person that files.
Insider trades, 12 mo
—
No open-market trades
Congress trades, 24 mo
—
No disclosed trades
13F holders
…
Lobbying, 12 mo
—
No lobbying filings
Federal contracts, 12 mo
—
None matched
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Latest 10-Q
What changed in Ballard Power Systems, Inc.'s latest quarterly report, compared with the one before.
We have not read a recent 10-Q for this company yet.
Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
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13F holders
Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
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Top 10 holders.Premium lists every holder, with CSV downloads.
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
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Lobbying
What Ballard Power Systems, Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
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Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
13F holders, Q3 2026Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
104
34 added · 30 trimmed
Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
No recent insider purchases or sales for this company.
13F holders
49.88M shares
104 funds report BLDP. Values checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
Funds own 35% of shares (Q2 2026)Fund managers with more than $100 million in US-listed stocks file a 13F each quarter. It lists their long stock positions only (shorts, options and bonds are left out) and can arrive up to 45 days after the quarter ends, so this is a snapshot of the quarter end. We add up the shares every fund reports in this class and divide by the shares outstanding. The total can pass 100%: the same shares are often reported by more than one manager (an adviser and the fund it runs), lent shares can be reported twice, and the share count can be out of date after buybacks. We divided 104.44M reported shares by 300.78M shares, from the cover page of the company’s filing as of Dec 31, 2025.
169 funds hold the stock.
Q3 2026: 17% · 5,560 of ~8,900 funds reported so farFunds have 45 days after a quarter ends to file. This quarter’s reports are still arriving, so the figure only counts the funds that have filed so far and will usually rise.
Q2 202526%
Q3 202526%
Q4 202529%
Q1 202630%
Q2 202635%
Q3 2026 (so far)17%
Q3 2026. 12 new, 34 added to, 30 trimmed, 76 exited since Q2 2026.
One of these funds reports its values in thousands of dollars; its figures are shown in dollars.
Download CSVEvery fund that holds BLDP, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Trades by members of Congress
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
Recent congressional trades
How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss.
What Ballard Power Systems, Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
No recent lobbying filings for this company.
Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
Funds holding the stock
Shares they report
Funds holding the stock by quarter
Q2 2013
38
—
2.85M
$5.1M
Q3 2013
37
-1
3.63M
$6.4M
Q4 2013
49
+12
5.56M
$8.4M
Q1 2014
64
+15
8.37M
$36.8M
Q2 2014
62
-2
6.38M
$27.1M
Q3 2014
57
-5
6.81M
$22.0M
Q4 2014
60
+3
11.69M
$23.3M
Q1 2015
56
-4
8.43M
$17.7M
Q2 2015
61
+5
9.38M
$19.5M
Q3 2015
66
+5
7.03M
$8.4M
Q4 2015
67
+1
8.76M
$13.6M
Q1 2016
59
-8
8.47M
$11.9M
Q2 2016
58
-1
6.97M
$8.7M
Q3 2016
61
+3
8.48M
$18.7M
Q4 2016
61
0
6.55M
$10.8M
Q1 2017
64
+3
4.49M
$10.0M
Q2 2017
71
+7
4.97M
$14.4M
Q3 2017
73
+2
5.51M
$25.8M
Q4 2017
88
+15
7.56M
$33.4M
Q1 2018
87
-1
7.32M
$26.0M
Q2 2018
83
-4
6.88M
$19.7M
Q3 2018
92
+9
5.83M
$25.0M
Q4 2018
87
-5
5.41M
$13.0M
Q1 2019
88
+1
6.48M
$21.1M
Q2 2019
86
-2
7.53M
$30.8M
Q3 2019
102
+16
10.46M
$51.3M
Q4 2019
100
-2
10.99M
$79.2M
Q1 2020
120
+20
15.97M
$121.3M
Q2 2020
148
+28
21.02M
$331.5M
Q3 2020
175
+27
54.32M
$826.4M
Q4 2020
230
+55
80.47M
$1.9B
Q1 2021
251
+21
85.03M
$2.1B
Q2 2021
240
-11
75.50M
$1.4B
Q3 2021
247
+7
85.27M
$1.2B
Q4 2021
244
-3
91.00M
$1.1B
Q1 2022
231
-13
86.39M
$1.0B
Q2 2022
223
-8
88.87M
$533.2M
Q3 2022
196
-27
87.57M
$537.2M
Q4 2022
189
-7
84.02M
$403.7M
Q1 2023
186
-3
76.73M
$426.3M
Q2 2023
196
+10
74.62M
$326.6M
Q3 2023
175
-21
73.22M
$269.6M
Q4 2023
182
+7
67.68M
$250.7M
Q1 2024
163
-19
68.75M
$196.9M
Q2 2024
173
+10
73.18M
$165.0M
Q3 2024
145
-28
61.83M
$111.0M
Q4 2024
153
+8
64.47M
$107.7M
Q1 2025
149
-4
57.57M
$63.4M
Q2 2025
133
-16
77.38M
$123.1M
Q3 2025
139
+6
76.93M
$209.3M
Q4 2025
137
-2
87.89M
$223.7M
Q1 2026
151
+14
89.58M
$216.6M
Q2 2026
169
+18
104.44M
$406.6M
Q3 2026
104
-65
49.88M
$101.7M
Each point is a quarter-end, from Q2 2013 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.
Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.
The history follows the company's current CUSIP number (058586108). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q2 2013) can be later than the stock's first appearance in 13F reports.
Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.
A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.