Silicon Laboratories Inc.
Silicon Laboratories Inc. (SLAB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SLAB · as of Sep 30, 2025
Ownership Breakdown
344
Institutional Holders
▲ 1 vs Q2
$4.30B
Total Inst. Value
▼ $716.22M vs Q2
32.98M
Shares Outstanding
freeFloat 98.11%
32.83M
13F Shares Held
▼ 1.30M 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
SLAB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FMR LLC semiconductors & related devices | 4.92M | 14.99% | 14.99% | $645.46B | Nov 13, 2025 | ▲ 36.5K |
BLACKROCK, INC. semiconductors & related devices | 4.51M | 13.72% | 13.72% | $590.95B | Nov 12, 2025 | ▲ 111.5K |
VANGUARD GROUP INC semiconductors & related devices | 3.87M | 11.79% | 11.79% | $507.60B | Nov 7, 2025 | ▲ 73.8K |
STATE STREET CORP semiconductors & related devices | 1.55M | 4.73% | 4.73% | $203.78B | Nov 14, 2025 | ▲ 36.2K |
MACQUARIE GROUP LTD semiconductors & related devices | 997.2K | 3.04% | 3.04% | $130.76B | Nov 13, 2025 | ▼ 94.2K |
GEODE CAPITAL MANAGEMENT, LLC semiconductors & related devices | 816.9K | 2.49% | 2.49% | $107.13B | Nov 12, 2025 | ▲ 6.1K |
CAPITAL RESEARCH GLOBAL INVESTORS semiconductors & related devices | 811.9K | 2.47% | 2.47% | $106.47B | Nov 13, 2025 | ▼ 395.0K |
INVESCO LTD. semiconductors & related devices | 755.1K | 2.30% | 2.30% | $99.02B | Nov 13, 2025 | ▲ 25.3K |
AQR CAPITAL MANAGEMENT LLC semiconductors & related devices | 701.9K | 2.14% | 2.14% | $91.11B | Nov 14, 2025 | ▲ 331.4K |
AMERICAN CENTURY COMPANIES INC semiconductors & related devices | 637.3K | 1.94% | 1.94% | $83.56B | Nov 12, 2025 | ▼ 5.9K |
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
25
Increased
+1.76M shares1
New Positions
first time holders23
Decreased
−1.95M shares0
Sold Out
fully exitedNet shares change (top 50)
189.6K
+1.76M / −1.95M
Net new holders
+3
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
SLAB 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.
10
Buy transactions
6
Sell transactions
1.67
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 |
|---|---|---|---|---|---|---|---|
Butler Dean Warren Sr VP and CFO | May 15, 2026 | Tax Withhold | 6,291 | $216.59 | $1.36M | 43.8K | Form 4 ↗ |
CONRAD ROBERT J Sr VP and General Manager | May 15, 2026 | Tax Withhold | 3,653 | $216.59 | $791.2K | 30.4K | Form 4 ↗ |
Johnson Robert Matthew President & CEO | May 15, 2026 | Tax Withhold | 10,363 | $216.59 | $2.24M | 88.5K | Form 4 ↗ |
Johnson Robert Matthew President & CEO | May 18, 2026 | Sale | 8,024 | $216.83 | $1.74M | 80.5K | Form 4 ↗ |
MAULDIN MARK D Chief Accounting Officer | May 15, 2026 | Tax Withhold | 858 | $216.59 | $185.8K | 21.1K | Form 4 ↗ |
Tolany Brandon Sr VP WW Sales & Marketing | May 15, 2026 | Tax Withhold | 4,160 | $216.59 | $901.0K | 66.9K | Form 4 ↗ |
MAULDIN MARK D Chief Accounting Officer | Apr 30, 2026 | Award | 18 | $86.46 | $1.6K | 21.9K | Form 4 ↗ |
Tolany Brandon Sr VP WW Sales & Marketing | Apr 30, 2026 | Award | 45 | $86.46 | $3.9K | 71.1K | Form 4 ↗ |
Butler Dean Warren Sr VP and CFO | Apr 30, 2026 | Award | 152 | $86.46 | $13.1K | 50.1K | Form 4 ↗ |
Wyatt Christy director | Apr 23, 2026 | Award | 962 | — | — | 9.5K | 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
Silicon Laboratories Inc. (SLAB) is primarily owned by institutional investors, who hold approximately 99.5% of total shares outstanding. Company insiders own approximately 1.89%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Silicon Laboratories Inc. is FMR LLC, holding approximately 4.92 million shares — equal to 14.99% of outstanding shares — as of September 30, 2025.
A total of 344 institutional investors currently hold SLAB stock, with a combined institutional value of approximately $4.30 billion as of the most recent 13F filing period.
Frequently asked questions
SLAB ownershipSilicon Laboratories Inc. (SLAB) is primarily owned by institutional investors, who hold approximately 99.5% of shares. The largest shareholder is FMR LLC with a 14.99% stake. Company insiders hold 1.89%. Data sourced from SEC Form 13F as of September 30, 2025.