CIX Institutional Ownership & Shareholders
COMPX INTERNATIONAL INC (CIX) is currently held by 46 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $22.85M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Dimensional Fund Advisors Lp is currently the largest disclosed institutional shareholder of CIX tracked by InsiderSet, reporting ownership valued at approximately $6.69M in its September 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.93M, representing an estimated gain of +3.50% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 95% of the total disclosed CIX value among the investors covered in this analysis. Major shareholders include Dimensional Fund Advisors Lp, Royce & Associates Lp, Blackrock, Inc., and several other long-term asset managers with concentrated positions in COMPX INTERNATIONAL INC (CIX).
This page ranks the largest institutional CIX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
46
Total Reported Value
$22.85M
Largest Holder
Dimensional Fund Advisors Lp
Largest Position
$6.69M
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
50
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Dimensional Fund Advisors Lp | 0.00% | 178,975 | $6,691,989 | $6,926,333 | +$234,344 | +3.50% | |
| Royce & Associates Lp | 0.03% | 166,074 | $4,135,243 | $6,427,064 | +$2,291,821 | +55.42% | |
| Blackrock, Inc. | 0.00% | 123,016 | $3,063,098 | $4,760,719 | +$1,697,621 | +55.42% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 100,749 | $2,508,650 | $3,898,986 | +$1,390,336 | +55.42% |
| Vanguard Capital Management Llc | 0.00% | 71,526 | $1,780,997 | $2,768,056 | +$987,059 | +55.42% | |
| Geode Capital Management, Llc | 0.00% | 37,943 | $1,418,862 | $1,468,394 | +$49,532 | +3.49% | |
| State Street Corp | 0.00% | 30,568 | $761,143 | $1,182,982 | +$421,839 | +55.42% | |
| Bridgeway Capital Management, Llc | 0.01% | 22,667 | $564,408 | $877,213 | +$312,805 | +55.42% | |
| Northern Trust Corp | 0.00% | 17,981 | $447,727 | $695,865 | +$248,138 | +55.42% | |
| Vanguard Portfolio Management Llc | 0.00% | 10,350 | $257,715 | $400,545 | +$142,830 | +55.42% | |
| Vanguard Fiduciary Trust Co | 0.00% | 10,270 | $255,723 | $397,449 | +$141,726 | +55.42% | |
| Barclays Plc | 0.00% | 6,205 | $232,005 | $240,134 | +$8,129 | +3.50% | |
| Jpmorgan Chase & Co | 0.00% | 4,823 | $126,796 | $186,650 | +$59,854 | +47.21% | |
| Deutsche Bank Ag\ | 0.00% | 2,741 | $102,486 | $106,077 | +$3,591 | +3.50% | |
| Morgan Stanley | 0.00% | 3,591 | $89,417 | $138,972 | +$49,555 | +55.42% | |
| Ifg Advisory, Llc | 0.00% | 3,147 | $78,361 | $121,789 | +$43,428 | +55.42% | |
| Rhumbline Advisers | 0.00% | 2,740 | $68,220 | $106,038 | +$37,818 | +55.44% | |
| Russell Investments Group, Ltd. | 0.00% | 1,553 | $58,072 | $60,101 | +$2,029 | +3.49% | |
| Ifp Advisors, Inc | 0.00% | 951 | $35,558 | $36,804 | +$1,246 | +3.50% | |
| Royal Bank Of Canada | 0.00% | 1,375 | $34,000 | $53,213 | +$19,213 | +56.51% | |
| Wells Fargo & Company/Mn | 0.00% | 1,307 | $32,552 | $50,581 | +$18,029 | +55.38% | |
| Los Angeles Capital Management Llc | 0.00% | 1,230 | $30,627 | $47,601 | +$16,974 | +55.42% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 718 | $17,878 | $27,787 | +$9,909 | +55.42% | |
| Tower Research Capital Llc (Trc) | 0.00% | 527 | $13,122 | $20,395 | +$7,273 | +55.43% | |
| Newedge Advisors, Llc | 0.00% | 300 | $7,470 | $11,610 | +$4,140 | +55.42% | |
| Bnp Paribas Financial Markets | 0.00% | 230 | $5,727 | $8,901 | +$3,174 | +55.42% | |
| New York State Common Retirement Fund | 0.00% | 214 | $5,329 | $8,282 | +$2,953 | +55.41% | |
| Sbi Securities Co., Ltd. | 0.00% | 114 | $4,262 | $4,412 | +$150 | +3.51% | |
| Strategic Wealth Partners, Ltd. | 0.00% | 165 | $4,109 | $6,386 | +$2,277 | +55.40% | |
| Ubs Group Ag | 0.00% | 162 | $4,034 | $6,269 | +$2,235 | +55.41% | |
| Fmr Llc | 0.00% | 169 | $3,502 | $6,540 | +$3,038 | +86.76% | |
| Legal & General Group Plc | 0.00% | 135 | $3,420 | $5,225 | +$1,805 | +52.76% | |
| Ameritas Investment Partners, Inc. | 0.00% | 124 | $3,088 | $4,799 | +$1,711 | +55.40% | |
| Citigroup Inc | 0.00% | 76 | $2,842 | $2,941 | +$99 | +3.49% | |
| Cwm, Llc | 0.00% | 66 | $1,542 | $2,554 | +$1,012 | +65.64% | |
| Sterling Capital Management Llc | 0.00% | 30 | $1,122 | $1,161 | +$39 | +3.48% | |
| California State Teachers Retirement System | 0.00% | 21 | $523 | $813 | +$290 | +55.39% | |
| Nisa Investment Advisors, Llc | 0.00% | 12 | $449 | $464 | +$15 | +3.43% | |
| Sjs Investment Consulting Inc. | 0.00% | 10 | $374 | $387 | +$13 | +3.48% | |
| Arax Advisory Partners | 0.00% | 6 | $149 | $232 | +$83 | +55.84% | |
| Ascentis Wealth Management, Llc | 0.00% | 4 | $149 | $155 | +$6 | +3.89% | |
| Eversource Wealth Advisors, Llc | 0.00% | 3 | $112 | $116 | +$4 | +3.66% | |
| Allworth Financial Lp | 0.00% | 3 | $75 | $116 | +$41 | +54.80% | |
| Farther Finance Advisors, Llc | 0.00% | 2 | $75 | $77 | +$2 | +3.20% | |
| Essential Partners Llc | 0.00% | 1 | $37 | $39 | +$2 | +4.59% | |
| Harbor Capital Advisors, Inc. | 0.00% | 162 | $6 | $6,269 | +$6,263 | +104390.00% |
Frequently asked questions about CIX
Who are the largest institutional holders of CIX?
The largest institutional holders of CIX reported in the latest SEC Form 13F filings include Dimensional Fund Advisors Lp, Royce & Associates Lp, Blackrock, Inc., Renaissance Technologies LLC, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported CIX position.
What is CIX institutional ownership?
This page tracks CIX positions reported by institutional investment managers through SEC Form 13F. COMPX INTERNATIONAL INC (CIX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CIX?
InsiderSet currently tracks 46 institutional managers reporting CIX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CIX shareholders.
How much CIX stock do institutions own?
Institutional investment managers disclosed approximately $22.85M in CIX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CIX institutional ownership last updated?
The latest CIX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CIX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CIX position after the reporting date.
Are institutions buying or selling CIX?
Institutional buying and selling can be analyzed by comparing CIX positions across consecutive 13F reporting periods. InsiderSet's CIX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CIX ownership changes.
How has CIX institutional ownership changed over time?
InsiderSet tracks CIX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.