First Solar, Inc.
First Solar, Inc. (FSLR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · FSLR · as of Sep 30, 2025
Ownership Breakdown
1,029
Institutional Holders
▲ 54 vs Q2
$23.14B
Total Inst. Value
▲ $4.95B vs Q2
107.45M
Shares Outstanding
freeFloat 94.57%
104.86M
13F Shares Held
▼ 5.20M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
FSLR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC semiconductors & related devices | 13.72M | 12.81% | 12.81% | $3.03T | Nov 7, 2025 | ▲ 464.1K |
BLACKROCK, INC. semiconductors & related devices | 12.78M | 11.93% | 11.93% | $2.82T | Nov 12, 2025 | ▼ 179.5K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP semiconductors & related devices | 8.33M | 7.77% | 7.77% | $1.84T | Nov 14, 2025 | ▲ 1.50M |
SUSQUEHANNA INTERNATIONAL GROUP, LLP semiconductors & related devices | 7.94M | 7.41% | 7.41% | $1.75T | Nov 14, 2025 | ▲ 1.06M |
JANE STREET GROUP, LLC semiconductors & related devices | 7.27M | 6.78% | 6.78% | $1.60T | Nov 14, 2025 | ▲ 1.85M |
STATE STREET CORP semiconductors & related devices | 5.27M | 4.92% | 4.92% | $1.16T | Nov 14, 2025 | ▼ 60.8K |
JANE STREET GROUP, LLC semiconductors & related devices | 5.25M | 4.90% | 4.90% | $1.16T | Nov 14, 2025 | ▲ 941.9K |
FMR LLC semiconductors & related devices | 4.44M | 4.14% | 4.14% | $978.21B | Nov 13, 2025 | ▲ 1.66M |
CITADEL ADVISORS LLC semiconductors & related devices | 4.35M | 4.06% | 4.06% | $958.45B | Nov 14, 2025 | ▼ 237.5K |
CITADEL ADVISORS LLC semiconductors & related devices | 3.92M | 3.66% | 3.66% | $863.66B | Nov 14, 2025 | ▲ 654.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
23
Increased
+12.48M shares1
New Positions
first time holders26
Decreased
−10.36M shares0
Sold Out
fully exitedNet shares change (top 50)
+2.13M
+12.48M / −10.36M
Net new holders
-2
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
FSLR insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
11
Buy transactions
68
Sell transactions
0.16
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Stockdale Caroline Chief People and Comm. Officer | May 28, 2026 | Sale | 10,628 | $275.60 | $2.93M | 23.8K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 239 | $250.02 | $59.8K | 88.8K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 172 | $251.53 | $43.3K | 88.6K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 97 | $252.87 | $24.5K | 88.5K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 218 | $253.63 | $55.3K | 88.3K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 916 | $254.93 | $233.5K | 87.4K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 64 | $255.59 | $16.4K | 87.3K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 75 | $256.32 | $19.2K | 87.3K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 149 | $257.55 | $38.4K | 87.1K | Form 4 ↗ |
Widmar Mark R Chief Executive Officer | May 22, 2026 | Sale | 47 | $258.48 | $12.1K | 87.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
First Solar, Inc. (FSLR) is primarily owned by institutional investors, who hold approximately 97.6% of total shares outstanding. Company insiders own approximately 5.43%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of First Solar, Inc. is VANGUARD GROUP INC, holding approximately 13.72 million shares — equal to 12.81% of outstanding shares — as of September 30, 2025.
A total of 1,029 institutional investors currently hold FSLR stock, with a combined institutional value of approximately $23.14 billion as of the most recent 13F filing period.
Frequently asked questions
FSLR ownershipFirst Solar, Inc. (FSLR) is primarily owned by institutional investors, who hold approximately 97.6% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.81% stake. Company insiders hold 5.43%. Data sourced from SEC Form 13F as of September 30, 2025.