GMS Ownership | Who Owns GMS?

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GMS Ownership Summary

GMS is owned by 95.35% institutional investors, 0.83% insiders, and 3.82% retail investors. Blackrock is the largest institutional shareholder, holding 16.69% of GMS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.03% of its assets in GMS shares.

GMS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	GMS	95.35%	0.83%	3.82%
Sector	Industrials Stocks	64.07%	12.69%	23.24%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	6.71M	16.69%	$541.25M
Fmr	5.87M	15.00%	$497.85M
Blackrock funding, inc. /de	5.66M	14.55%	$615.93M
Vanguard group	5.11M	13.06%	$433.56M
Coliseum capital management	3.83M	9.83%	$415.99M
Dimensional fund advisors lp	2.12M	5.43%	$180.08M
State street	1.53M	3.81%	$123.63M
American century companies	1.34M	3.45%	$146.10M
Pacer advisors	1.29M	3.29%	$109.28M
Geode capital management	887.74K	2.27%	$75.32M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Coliseum capital management	3.83M	29.86%	$415.99M
Bck capital management lp	64.99K	6.10%	$7.07M
Governors lane lp	281.23K	2.76%	$30.58M
Reinhart partners	541.52K	1.77%	$45.94M
Fort baker capital management lp	88.25K	1.65%	$9.60M
Hbk investments l p	704.72K	1.62%	$76.64M
Water island capital	88.63K	1.37%	$9.64M
Alpine associates management	220.00K	1.28%	$23.93M
Chicago capital management	15.00K	1.20%	$1.63M
Harvest management	23.01K	1.06%	$2.50M

Top Buyers

Holder	Shares	% Assets	Change
Fmr	5.87M	0.03%	1.64M
Pacer advisors	1.29M	0.24%	1.29M
Hbk investments l p	704.72K	1.62%	704.72K
Sculptor capital lp	500.00K	0.77%	500.00K
Pentwater capital management lp	400.00K	0.28%	400.00K

Top Sellers

Holder	Shares	% Assets	Change
T. rowe price investment management	-	-	-1.33M
Capital world investors	-	-	-793.74K
Pzena investment management	-	-	-419.67K
Verition fund management	20.76K	0.01%	-383.49K
River road asset management	484.95K	0.68%	-347.77K

New Positions

Holder	Shares	% Assets	Change	Value
Hbk investments l p	704.72K	1.62%	704.72K	$76.64M
Sculptor capital lp	500.00K	0.77%	500.00K	$54.38M
Pentwater capital management lp	400.00K	0.28%	400.00K	$43.50M
Governors lane lp	281.23K	2.76%	281.23K	$30.58M
Toronto dominion bank	239.60K	0.04%	239.60K	$26.06M

Sold Out

Holder	Change
Innealta capital	-1.00
Tfo-tdc	-1.00
Mendota financial group	-1.00
Tfc financial management	-1.00
Bruce g. allen investments	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	322	17.52%	37,119,087	-7.67%	95	0.88%	172	34.38%	112	7.69%
Mar 31, 2025	6	-97.80%	3,716,232	-90.75%	9	0.09%	4	-96.61%	2	-98.06%
Dec 31, 2024	180	-37.06%	30,999,605	-21.18%	79	0.80%	78	-37.10%	66	-41.59%
Sep 30, 2024	286	-4.67%	39,329,834	-2.58%	99	0.99%	124	-15.07%	113	7.62%
Jun 30, 2024	296	-10.03%	40,341,539	3.53%	100	1.05%	144	-11.11%	104	-9.57%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	2.29M	6.03%	330.00
Vanguard US Total Market Shares ETF	1.26M	3.28%	1.12K
Vanguard Total Stock Mkt Idx Inv	1.21M	3.19%	-32.41K
Vanguard Small Cap Index	932.76K	2.45%	-6.04K
iShares Russell 2000 ETF	910.74K	2.40%	-17.32K
American Century Small Cap Value Inv	874.30K	2.30%	-395.70K
American Century U.S. Small Cap Value	874.30K	2.30%	-395.70K
Fidelity Low-Priced Stock	807.74K	2.13%	-1.49K
Vanguard Small Cap Value Index Inv	600.10K	1.58%	1.53K
American Funds SMALLCAP World A	611.79K	1.58%	-793.74K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jul 14, 2025	Coliseum Capital Management, LLC	-	Sell	$19.71M
Jul 15, 2025	Coliseum Capital Management, LLC	-	Sell	$11.51M
Jul 16, 2025	Coliseum Capital Management, LLC	-	Sell	$6.05M
Jun 30, 2025	Hendren George T	SVP, Chief Operating Officer	Sell	$541.15K
Apr 07, 2025	Turner John C JR	President and CEO	Buy	$255.50K

Insider Transactions Trends

Date	Buy	Sell
2025 Q3	-	3
2025 Q2	1	2
2025 Q1	-	-
2024 Q4	-	1
2024 Q3	-	2

GMS Ownership FAQ

Who owns the most shares of GMS?

GMS’s largest shareholders are Blackrock (6.71M shares, 16.69%), Fmr (5.87M shares, 15.00%), and Blackrock funding, inc. /de (5.66M shares, 14.55%). Together, they hold 46.24% of GMS’s total shares outstanding.

Does Blackrock own GMS?

Yes, BlackRock owns 16.69% of GMS, totaling 6.71M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 541.25M$. In the last quarter, BlackRock increased its holdings by 131.49K shares, a 2.00% change.

Who is GMS’s biggest shareholder by percentage of total assets invested?

Coliseum capital management is GMS’s biggest shareholder by percentage of total assets invested, with 29.86% of its assets in 3.83M GMS shares, valued at 415.99M$.

Who is the top mutual fund holder of GMS shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of GMS shares, with 6.03% of its total shares outstanding invested in 2.29M GMS shares.

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