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Who owns CIX?

Institutional ownership of CompX International Inc. from Form 13F, Q2 2026

45 institutional managers reported holding CompX International Inc. (CIX) in Form 13F filings for Q2 2026, with 804,487 shares worth $20.0M. The largest reported holder was Dimensional Fund Advisors LP. Managers that filed both quarters added a net 15,431 shares (+2.0%). 5 opened new positions and 1 sold out.

Funds holding
45
Value held
$20.0M
New / sold out
5 / 1
Net shares, same filers
+2.0%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of CIX

FundValueShare of 13F holdingsSharesMove
Dimensional Fund Advisors LP$4.5M22.4%179,827Added
Royce & Associates LP$4.1M20.6%166,074Unchanged
BlackRock, Inc.$3.1M15.3%123,016Added
Renaissance Technologies LLC$2.5M12.5%100,749Trimmed
Vanguard Capital Management LLC$1.8M8.9%71,526Trimmed
Geode Capital Management, LLC$1.0M5.1%40,842Added
State Street Corp$761K3.8%30,568Trimmed
Bridgeway Capital Management, LLC$564K2.8%22,667Trimmed
Northern Trust Corp$448K2.2%17,981Added
Vanguard Portfolio Management LLC$258K1.3%10,350Added
Vanguard Fiduciary Trust Co$256K1.3%10,270Trimmed
Barclays PLC$145K0.7%5,817Trimmed
JPMorgan Chase & Co$127K0.6%4,823Trimmed
Morgan Stanley$89K0.4%3,591Trimmed
IFG Advisory, LLC$78K0.4%3,147New
Rhumbline Advisers$68K0.3%2,740Added
Deutsche Bank Ag\$36K0.2%1,434Unchanged
Royal Bank of Canada$34K0.2%1,375Added
Wells Fargo & Company$33K0.2%1,307Added
Los Angeles Capital Management LLC$31K0.2%1,230New
Russell Investments Group, Ltd.$22K0.1%878Added
Citigroup Inc$18K0.1%722Added
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$18K0.1%718Trimmed
FMR LLC$18K0.1%709Trimmed
Tower Research Capital LLC (TRC)$13K0.1%527Trimmed

Share of 13F holdings is each fund's shares as a share of the 804,487 CIX shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

  1. BlackRock, Inc. Added+$386K
  2. Geode Capital Management, LLC Added+$156K
  3. IFG Advisory, LLC New+$78K
  4. Vanguard Portfolio Management LLC Added+$38K
  5. Los Angeles Capital Management LLC New+$31K
  6. Northern Trust Corp Added+$25K
  7. Wells Fargo & Company Added+$18K
  8. Citigroup Inc Added+$16K
  9. Russell Investments Group, Ltd. Added+$14K
  10. Dimensional Fund Advisors LP Added+$10K

Biggest sellers in Q2 2026

  1. Vanguard Capital Management LLC Trimmed-$167K
  2. Renaissance Technologies LLC Trimmed-$154K
  3. Bridgeway Capital Management, LLC Trimmed-$25K
  4. Morgan Stanley Trimmed-$19K
  5. Vanguard Fiduciary Trust Co Trimmed-$9K
  6. MAI Capital Management Sold out-$7K
  7. Tower Research Capital LLC (TRC) Trimmed-$5K
  8. UBS Group AG Trimmed-$3K
  9. Barclays PLC Trimmed-$3K
  10. BNP Paribas Financial Markets Trimmed-$3K

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $789K and sold $404K; 13 added and 17 trimmed.

Questions about CIX ownership

Who owns CIX stock?
45 institutional investment managers reported CIX positions in their Form 13F filings for Q2 2026, holding 804,487 shares worth $20.0M in total. Dimensional Fund Advisors LP reported the largest position.
Are funds buying or selling CIX?
In Q2 2026, 5 managers opened new CIX positions, 13 added, 17 trimmed and 1 sold out. Managers that filed in both quarters added a net 15,431 shares.
How current is this CIX institutional ownership data?
It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to CIX by CUSIP. Options are left out. CIX news and filings · CIX insider trades · Top funds