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 Mar 31, 2025
Ownership Breakdown
898
Institutional Holders
▼ 75 vs Q4
$12.59B
Total Inst. Value
▼ $4.10B vs Q4
107.45M
Shares Outstanding
freeFloat 94.57%
100.05M
13F Shares Held
▲ 4.79M vs Q4
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
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC semiconductors & related devices | 13.20M | 12.32% | 12.32% | $1.67T | May 9, 2025 | ▲ 378.6K |
BLACKROCK, INC. semiconductors & related devices | 11.86M | 11.07% | 11.07% | $1.50T | May 2, 2025 | ▲ 146.5K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP semiconductors & related devices | 5.41M | 5.05% | 5.05% | $683.71B | May 14, 2025 | ▲ 1.61M |
STATE STREET CORP semiconductors & related devices | 5.21M | 4.87% | 4.87% | $659.23B | May 15, 2025 | ▲ 43.4K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP semiconductors & related devices | 4.78M | 4.46% | 4.46% | $603.91B | May 14, 2025 | ▲ 572.9K |
JANE STREET GROUP, LLC semiconductors & related devices | 3.30M | 3.08% | 3.08% | $417.74B | May 19, 2025 | ▼ 932.9K |
JANE STREET GROUP, LLC semiconductors & related devices | 2.85M | 2.66% | 2.66% | $360.77B | May 19, 2025 | ▼ 1.08M |
GEODE CAPITAL MANAGEMENT, LLC semiconductors & related devices | 2.83M | 2.64% | 2.64% | $357.47B | May 13, 2025 | ▲ 165.1K |
WELLINGTON MANAGEMENT GROUP LLP semiconductors & related devices | 2.77M | 2.58% | 2.58% | $349.62B | May 13, 2025 | ▲ 405.5K |
CITADEL ADVISORS LLC semiconductors & related devices | 2.75M | 2.57% | 2.57% | $347.64B | May 15, 2025 | ▲ 399.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
34
Increased
+15.42M shares4
New Positions
first time holders12
Decreased
−4.78M shares0
Sold Out
fully exitedNet shares change (top 50)
+10.64M
+15.42M / −4.78M
Net new holders
+26
4 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 93.1% of total shares outstanding. Company insiders own approximately 5.43%, while retail and public investors account for the remaining 1.46%.
The largest institutional shareholder of First Solar, Inc. is VANGUARD GROUP INC, holding approximately 13.20 million shares — equal to 12.32% of outstanding shares — as of March 31, 2025.
A total of 898 institutional investors currently hold FSLR stock, with a combined institutional value of approximately $12.59 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 93.1% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.32% stake. Company insiders hold 5.43%. Data sourced from SEC Form 13F as of March 31, 2025.