Ranked by reported Q1 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. | 6.6M | $498.3M | -0.1% | 12.669% | 0.01% |
| 2 | WELLINGTON MANAGEMENT GROUP LLP | 3.6M | $268.6M | -4.9% | 6.829% | 0.05% |
| 3 | EARNEST PARTNERS LLC | 3.2M | $237.9M | +1.7% | 6.048% | 0.98% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.1M | $235.1M | — | 5.977% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | $175.0M | — | 4.451% | 0.00% |
| 6 | AMERICAN CENTURY COMPANIES INC | 2.2M | $168.5M | +10.8% | 4.285% | 0.09% |
| 7 | FULLER & THALER ASSET MANAGEMENT, INC. | 2.0M | $154.3M | -12.6% | 3.922% | 0.52% |
| 8 | STATE STREET CORP | 2.0M | $152.7M | +0.1% | 3.882% | 0.01% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 1.7M | $131.3M | +4.8% | 3.337% | 0.03% |
| 10 | BANK OF AMERICA CORP /DE/ | 1.5M | $114.2M | -0.9% | 2.903% | 0.01% |
| 11 | FMR LLC | 1.4M | $102.7M | +41.2% | 2.611% | 0.01% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 1.4M | $102.0M | +1.8% | 2.594% | 0.01% |
| 13 | SEI INVESTMENTS CO | 1.1M | $79.2M | +6.5% | 2.014% | 0.07% |
| 14 | SNYDER CAPITAL MANAGEMENT L P | 925K | $69.7M | -4.8% | 1.772% | 1.35% |
| 15 | AQR CAPITAL MANAGEMENT LLC | 851K | $64.1M | +0.6% | 1.630% | 0.03% |
| 16 | MORGAN STANLEY | 797K | $60.1M | +1.4% | 1.527% | 0.00% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 746K | $56.2M | +0.2% | 1.428% | 0.01% |
| 18 | Invesco Ltd. | 640K | $48.2M | +31.8% | 1.226% | 0.01% |
| 19 | Bank of New York Mellon Corp | 634K | $47.8M | -0.3% | 1.214% | 0.01% |
| 20 | NORTHERN TRUST CORP | 632K | $47.6M | +2.1% | 1.209% | 0.01% |
| 21 | FIDUCIARY TRUST CO | 537K | $40.4M | 0.0% | 1.028% | 0.48% |
| 22 | Capital Research Global Investors | 463K | $34.8M | 0.0% | 0.886% | 0.01% |
| 23 | Lightrock Netherlands B.V. | 422K | $30.7M | -7.8% | 0.809% | 6.56% |
| 24 | ProShare Advisors LLC | 366K | $27.6M | +2125.5% | 0.702% | 0.04% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 363K | $27.4M | — | 0.696% | 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 Q1 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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 366 | +3.1% | 79.48% | +8.28 pp | $3.64B | +12% |
| Q4 2025 | 355 | 3.5% | 71.20% | 8.97 pp | $3.26B | 11% |
| Q3 2025 | 368 | 1.9% | 80.17% | +0.58 pp | $3.67B | +0.7% |
| Q2 2025 | 375 | 4.8% | 79.59% | 8.55 pp | $3.64B | 9.7% |
| Q1 2025 | 394 | 6.0% | 88.14% | 11.83 pp | $4.03B | 12% |
| Q4 2024 | 419 | +5.0% | 99.97% | 17.82 pp | $4.58B | 15% |
| Q3 2024 | 399 | +3.9% | 117.79% | +16.96 pp | $5.39B | +17% |
| Q2 2024 | 384 | — | 100.83% | — | $4.62B | — |
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 Q1 2026 13F filings, institutional ownership of Cabot Corporation stands at 79.5%, held across 366 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of CBT, with approximately 6,616,051 shares worth $0.50B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of CBT.
Our composite Smart Money Score for CBT is 49 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
57 institutions opened new positions in CBT during Q1 2026, while 46 fully exited. 243 added to existing positions and 64 trimmed.
CBT institutional ownership rose by 8.28 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 58.7% of all reported 13F value in CBT, and the top 25 account for 81.8%.
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.
Cabot Corporation (CBT) Institutional Ownership