Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ABM held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.9M | $342.1M | -1.5% | 15.161% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 4.1M | $157.0M | +0.6% | 6.958% | 0.03% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.1M | $157.0M | — | 6.958% | 0.01% |
| 4 | STATE STREET CORP | 3.0M | $116.9M | -1.7% | 5.179% | 0.00% |
| 5 | HARRIS ASSOCIATES L P | 2.9M | $111.0M | +6.3% | 4.920% | 0.15% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | $100.7M | — | 4.463% | 0.00% |
| 7 | Invesco Ltd. | 1.7M | $66.2M | +21.5% | 2.934% | 0.01% |
| 8 | NORDEA INVESTMENT MANAGEMENT AB | 1.7M | $63.7M | +37.2% | 2.857% | 0.06% |
| 9 | AMERIPRISE FINANCIAL INC | 1.6M | $61.6M | +20.0% | 2.728% | 0.01% |
| 10 | PZENA INVESTMENT MANAGEMENT LLC | 1.5M | $58.7M | +30.0% | 2.600% | 0.19% |
| 11 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.5M | $56.7M | -9.9% | 2.514% | 0.10% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $56.1M | +0.4% | 2.487% | 0.00% |
| 13 | FULLER & THALER ASSET MANAGEMENT, INC. | 1.1M | $41.0M | -3.6% | 1.815% | 0.14% |
| 14 | Boston Partners | 770K | $29.7M | -2.5% | 1.315% | 0.03% |
| 15 | MORGAN STANLEY | 731K | $28.1M | +0.8% | 1.247% | 0.00% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 699K | $26.9M | -3.1% | 1.192% | 0.00% |
| 17 | NORTHERN TRUST CORP | 637K | $24.5M | +2.9% | 1.088% | 0.00% |
| 18 | Vulcan Value Partners, LLC | 630K | $24.3M | -4.3% | 1.076% | 0.64% |
| 19 | GOLDMAN SACHS GROUP INC | 580K | $22.4M | +32.2% | 0.991% | 0.00% |
| 20 | Invenomic Capital Management LP | 559K | $21.5M | -11.2% | 0.955% | 0.99% |
| 21 | BANK OF AMERICA CORP /DE/ | 553K | $21.3M | -4.6% | 0.944% | 0.00% |
| 22 | CITADEL ADVISORS LLC | 535K | $20.6M | +138.3% | 0.913% | 0.01% |
| 23 | Qube Research & Technologies Ltd | 519K | $20.0M | +8.6% | 0.885% | 0.02% |
| 24 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 488K | $18.8M | +3.5% | 0.833% | 0.06% |
| 25 | Gemmer Asset Management LLC | 468K | $18.0M | 0.0% | 0.800% | 1.43% |
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 ABM — a direct measure of their conviction.
Filings activity in ABM 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 | 280 | 7.6% | 75.84% | 9.16 pp | $2.04B | 11% |
| Q4 2025 | 303 | +1.7% | 85.00% | 12.29 pp | $2.29B | 13% |
| Q3 2025 | 298 | 5.1% | 97.29% | 27.82 pp | $2.62B | 22% |
| Q2 2025 | 314 | +3.0% | 125.11% | +26.81 pp | $3.37B | +27% |
| Q1 2025 | 305 | +6.6% | 98.30% | 19.61 pp | $2.64B | 17% |
| Q4 2024 | 286 | 3.7% | 117.91% | +11.76 pp | $3.17B | +11% |
| Q3 2024 | 297 | +2.4% | 106.15% | 1.63 pp | $2.86B | 1.5% |
| Q2 2024 | 290 | — | 107.78% | — | $2.90B | — |
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 ABM stock.
Based on Q1 2026 13F filings, institutional ownership of ABM Industries Incorporated stands at 75.8%, held across 280 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ABM, with approximately 8,881,541 shares worth $0.34B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of ABM, including CITADEL ADVISORS LLC.
Our composite Smart Money Score for ABM is 32 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
40 institutions opened new positions in ABM during Q1 2026, while 63 fully exited. 76 added to existing positions and 164 trimmed.
ABM institutional ownership fell by 9.16 percentage points quarter-over-quarter, with a net change of -23 holders.
The top 10 institutions account for 60.5% of all reported 13F value in ABM, and the top 25 account for 81.6%.
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.
ABM Industries Incorporated (ABM) Institutional Ownership