Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in CBT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.0M | $633.3M | +5.4% | 13.508% | 0.01% |
| 2 | EARNEST PARTNERS LLC | 3.3M | $303.9M | +5.9% | 6.481% | 1.10% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.1M | $279.4M | -1.4% | 5.961% | 0.01% |
| 4 | AMERICAN CENTURY COMPANIES INC | 2.8M | $251.4M | +23.7% | 5.362% | 0.11% |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | 2.4M | $219.5M | -32.2% | 4.681% | 0.04% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | $210.8M | -0.1% | 4.497% | 0.00% |
| 7 | STATE STREET CORP | 2.2M | $196.7M | +6.8% | 4.195% | 0.00% |
| 8 | FULLER & THALER ASSET MANAGEMENT, INC. | 2.0M | $182.0M | -2.2% | 3.881% | 0.50% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 1.9M | $174.9M | +10.5% | 3.731% | 0.03% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $161.6M | +31.3% | 3.446% | 0.01% |
| 11 | BANK OF AMERICA CORP /DE/ | 1.7M | $150.8M | +9.5% | 3.216% | 0.01% |
| 12 | FMR LLC | 1.6M | $141.7M | +14.5% | 3.023% | 0.01% |
| 13 | SEI INVESTMENTS CO | 1.2M | $109.3M | +14.4% | 2.330% | 0.10% |
| 14 | SNYDER CAPITAL MANAGEMENT L P | 900K | $81.8M | -2.7% | 1.744% | 1.41% |
| 15 | AQR CAPITAL MANAGEMENT LLC | 870K | $79.0M | +2.2% | 1.685% | 0.03% |
| 16 | MORGAN STANLEY | 837K | $76.0M | +5.0% | 1.622% | 0.00% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 701K | $63.7M | -6.0% | 1.359% | 0.01% |
| 18 | NORTHERN TRUST CORP | 650K | $59.0M | +2.9% | 1.259% | 0.01% |
| 19 | Bank of New York Mellon Corp | 633K | $57.4M | -0.3% | 1.225% | 0.01% |
| 20 | NORGES BANK | 574K | $52.2M | — | 1.113% | 0.01% |
| 21 | FIDUCIARY TRUST CO | 532K | $48.3M | -1.0% | 1.030% | 0.53% |
| 22 | GOLDMAN SACHS GROUP INC | 512K | $46.5M | +103.4% | 0.991% | 0.00% |
| 23 | MILLENNIUM MANAGEMENT LLC | 489K | $44.4M | +5096.0% | 0.948% | 0.02% |
| 24 | UBS Group AG | 487K | $44.3M | +69.5% | 0.944% | 0.01% |
| 25 | Capital Research Global Investors | 426K | $38.7M | -8.0% | 0.825% | 0.01% |
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 CBT — a direct measure of their conviction.
Filings activity in CBT during Q2 2026, grouped by how each filer changed its position.
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 | 393 | +4.8% | 104.51% | +5.12 pp | $4.55B | +25% |
| Q1 2026 | 375 | +5.3% | 99.39% | +1.87 pp | $3.65B | +12% |
| Q4 2025 | 356 | 3.8% | 97.52% | +1.89 pp | $3.26B | 11% |
| Q3 2025 | 370 | 1.3% | 95.63% | 0.42 pp | $3.67B | +0.8% |
| Q2 2025 | 375 | 4.8% | 96.05% | +0.43 pp | $3.64B | 9.7% |
| Q1 2025 | 394 | 6.0% | 95.62% | 1.43 pp | $4.03B | 12% |
| Q4 2024 | 419 | +5.0% | 97.05% | +2.88 pp | $4.58B | 15% |
| Q3 2024 | 399 | — | 94.17% | — | $5.39B | — |
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 CBT stock.
Based on Q2 2026 13F filings, institutional ownership of Cabot Corp. stands at 104.5%, held across 393 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of CBT, with approximately 6,973,153 shares worth $0.63B as of Q2 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of CBT, including MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for CBT is 61 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
53 institutions opened new positions in CBT during Q2 2026, while 40 fully exited. 295 added to existing positions and 31 trimmed.
CBT institutional ownership rose by 5.12 percentage points quarter-over-quarter, with a net change of +18 holders.
The top 10 institutions account for 57.4% of all reported 13F value in CBT, and the top 25 account for 81.4%.
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.
Cabot Corp. (CBT) Institutional Ownership