GMS Inc.
GMS Inc. (GMS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · GMS · as of Jun 30, 2025
Ownership Breakdown
333
Institutional Holders
▲ 56 vs Q1
$4.10B
Total Inst. Value
▲ $1.15B vs Q1
38.17M
Shares Outstanding
freeFloat 90.03%
37.67M
13F Shares Held
▼ 2.60M vs Q1
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
GMS largest shareholders · institutional ownership
Q2 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. wholesale-lumber & other construction materials | 5.66M | 14.55% | 14.55% | $615.93B | Aug 12, 2025 | ▼ 153.0K |
VANGUARD GROUP INC wholesale-lumber & other construction materials | 4.24M | 10.88% | 10.88% | $460.80B | Aug 11, 2025 | ▼ 368.2K |
COLISEUM CAPITAL MANAGEMENT, LLC wholesale-lumber & other construction materials | 3.83M | 9.83% | 9.83% | $415.99B | Aug 14, 2025 | ▲ 387.7K |
FMR LLC wholesale-lumber & other construction materials | 3.44M | 8.85% | 8.85% | $374.64B | Aug 14, 2025 | ▼ 2.31M |
DIMENSIONAL FUND ADVISORS LP wholesale-lumber & other construction materials | 1.99M | 5.12% | 5.12% | $216.53B | Aug 12, 2025 | ▼ 162.6K |
STATE STREET CORP wholesale-lumber & other construction materials | 1.48M | 3.80% | 3.80% | $160.77B | Aug 14, 2025 | ▲ 5.4K |
AMERICAN CENTURY COMPANIES INC wholesale-lumber & other construction materials | 1.34M | 3.45% | 3.45% | $146.10B | Aug 12, 2025 | ▼ 316.8K |
GEODE CAPITAL MANAGEMENT, LLC wholesale-lumber & other construction materials | 902.0K | 2.32% | 2.32% | $98.10B | Aug 8, 2025 | ▲ 2.6K |
HBK INVESTMENTS L P wholesale-lumber & other construction materials | 704.7K | 1.81% | 1.81% | $76.64B | Aug 13, 2025 | NEW |
WESTWOOD HOLDINGS GROUP INC wholesale-lumber & other construction materials | 660.1K | 1.70% | 1.70% | $71.78B | Oct 8, 2025 | ▼ 273.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q2 2025 vs prior quarter
Q2 2025
16
Increased
+1.37M shares15
New Positions
first time holders19
Decreased
−5.27M shares0
Sold Out
fully exitedNet shares change (top 50)
3.90M
+1.37M / −5.27M
Net new holders
+12
15 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
GMS insider trading · insider activity
Source: SEC Form 4
39
Buy transactions
47
Sell transactions
0.83
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 |
|---|---|---|---|---|---|---|---|
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 49,491 | $74.80 | $3.70M | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 37,178 | — | — | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 43,893 | $92.63 | $4.07M | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 74,110 | $49.13 | $3.64M | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 61,192 | $53.82 | $3.29M | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 80,116 | $110.00 | $8.81M | 0 | Form 4 ↗ |
Turner John C JR President and CEO | Sep 4, 2025 | D-Return | 88,417 | $23.43 | $2.07M | 0 | Form 4 ↗ |
Hendren George T SVP, Chief Operating Officer | Sep 4, 2025 | U-Tender | 21,675 | $110.00 | $2.38M | 2.5K | Form 4 ↗ |
Hendren George T SVP, Chief Operating Officer | Sep 4, 2025 | D-Return | 8,999 | $74.80 | $673.1K | 0 | Form 4 ↗ |
Hendren George T SVP, Chief Operating Officer | Sep 4, 2025 | D-Return | 8,646 | $49.13 | $424.8K | 0 | 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
GMS Inc. (GMS) is primarily owned by institutional investors, who hold approximately 98.7% of total shares outstanding. Company insiders own approximately 9.97%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of GMS Inc. is BLACKROCK, INC., holding approximately 5.66 million shares — equal to 14.55% of outstanding shares — as of June 30, 2025.
A total of 333 institutional investors currently hold GMS stock, with a combined institutional value of approximately $4.10 billion as of the most recent 13F filing period.
Frequently asked questions
GMS ownershipGMS Inc. (GMS) is primarily owned by institutional investors, who hold approximately 98.7% of shares. The largest shareholder is BLACKROCK, INC. with a 14.55% stake. Company insiders hold 9.97%. Data sourced from SEC Form 13F as of June 30, 2025.