Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in CIX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | DIMENSIONAL FUND ADVISORS LP | 180K | $4.5M | +0.2% | 1.459% | 0.00% |
| 2 | ROYCE & ASSOCIATES LP | 166K | $4.1M | 0.0% | 1.348% | 0.03% |
| 3 | BlackRock, Inc. | 123K | $3.1M | +14.4% | 0.998% | 0.00% |
| 4 | RENAISSANCE TECHNOLOGIES LLC | 101K | $2.5M | -5.8% | 0.818% | 0.00% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 72K | $1.8M | -8.6% | 0.580% | 0.00% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 41K | $1.0M | +18.1% | 0.331% | 0.00% |
| 7 | STATE STREET CORP | 31K | $761K | -0.1% | 0.248% | 0.00% |
| 8 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 23K | $564K | -4.2% | 0.184% | 0.01% |
| 9 | NORTHERN TRUST CORP | 18K | $448K | +5.9% | 0.146% | 0.00% |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 10K | $258K | +17.2% | 0.084% | 0.00% |
| 11 | VANGUARD FIDUCIARY TRUST CO | 10K | $256K | -3.5% | 0.083% | 0.00% |
| 12 | BARCLAYS PLC | 6K | $145K | -1.9% | 0.047% | 0.00% |
| 13 | JPMORGAN CHASE & CO | 5K | $127K | -1.7% | 0.039% | 0.00% |
| 14 | MORGAN STANLEY | 4K | $89K | -17.7% | 0.029% | 0.00% |
| 15 | IFG Advisory, LLC | 3K | $78K | — | 0.026% | 0.00% |
| 16 | RHUMBLINE ADVISERS | 3K | $68K | +4.4% | 0.022% | 0.00% |
| 17 | DEUTSCHE BANK AG\ | 1K | $36K | 0.0% | 0.012% | 0.00% |
| 18 | ROYAL BANK OF CANADA | 1K | $34K | +19.5% | 0.011% | 0.00% |
| 19 | WELLS FARGO & COMPANY/MN | 1K | $33K | +130.5% | 0.011% | 0.00% |
| 20 | LOS ANGELES CAPITAL MANAGEMENT LLC | 1K | $31K | — | 0.010% | 0.00% |
| 21 | Russell Investments Group, Ltd. | 878 | $22K | +166.9% | 0.007% | 0.00% |
| 22 | CITIGROUP INC | 722 | $18K | +837.7% | 0.006% | 0.00% |
| 23 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 718 | $18K | -6.4% | 0.006% | 0.00% |
| 24 | FMR LLC | 709 | $18K | -4.5% | 0.006% | 0.00% |
| 25 | Tower Research Capital LLC (TRC) | 527 | $13K | -28.5% | 0.004% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in CIX — a direct measure of their conviction.
Filings activity in CIX during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new CIX position in Q2 2026
Institutions that fully closed their CIX position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 44 | +2.3% | 6.53% | +0.12 pp | $20M | +8.6% |
| Q1 2026 | 43 | +10% | 6.41% | 0.14 pp | $18M | 1.8% |
| Q4 2025 | 39 | 9.3% | 6.55% | 0.60 pp | $19M | 8.8% |
| Q3 2025 | 43 | 2.3% | 7.15% | 0.41 pp | $21M | 16% |
| Q2 2025 | 44 | +4.8% | 7.56% | +0.07 pp | $24M | +29% |
| Q1 2025 | 42 | +2.4% | 7.49% | 0.16 pp | $19M | 22% |
| Q4 2024 | 41 | +0.0% | 7.65% | +0.51 pp | $24M | 4.1% |
| Q3 2024 | 41 | — | 7.14% | — | $25M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying CIX stock.
Based on Q2 2026 13F filings, institutional ownership of CompX International Inc. stands at 6.5%, held across 44 reporting institutions.
DIMENSIONAL FUND ADVISORS LP is the largest reported institutional holder of CIX, with approximately 179,827 shares worth $0.00B as of Q2 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of CIX, including RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for CIX is 57 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
3 institutions opened new positions in CIX during Q2 2026, while 1 fully exited. 30 added to existing positions and 11 trimmed.
CIX institutional ownership rose by 0.12 percentage points quarter-over-quarter, with a net change of +1 holders.
The top 10 institutions account for 94.9% of all reported 13F value in CIX, and the top 25 account for 99.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
CompX International Inc. (CIX) Institutional Ownership