Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
3,016 institutional managers reported holding ABT for the quarter ended Mar 31, 2026. Together they hold about 77% of shares outstanding; the top 10 hold 38%. 165 opened new positions; 382 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 179.19M | 10.26% | $18.39B | added +1.9% | ≤2013 |
| BlackRock | 145.69M | 8.34% | $14.95B | trimmed -0.8% | ≤2013 |
| State Street | 79.58M | 4.55% | $8.17B | unchanged | 2015 Q4 |
| Capital Research Global Investors | 49.78M | 2.85% | $5.11B | added +27.1% | ≤2013 |
| Charles Schwab Investment Management | 45.53M | 2.61% | $4.67B | added +244.4% | ≤2013 |
| Geode Capital | 39.15M | 2.24% | $4.02B | added +1.9% | ≤2013 |
| Capital International Investors | 37.50M | 2.15% | $3.85B | trimmed -40.7% | ≤2013 |
| Morgan Stanley | 30.10M | 1.72% | $3.09B | trimmed -18% | ≤2013 |
| Wellington Management | 27.07M | 1.55% | $2.78B | added +15.5% | ≤2013 |
| UBS | 25.35M | 1.45% | $2.60B | added +17.7% | ≤2013 |
| Franklin Resources | 20.02M | 1.15% | $2.05B | added +79.5% | ≤2013 |
| Northern Trust | 19.39M | 1.11% | $1.99B | trimmed -1.9% | ≤2013 |
| Bank OF America CORP /DE/ | 19.28M | 1.10% | $1.98B | trimmed -2.8% | ≤2013 |
| T. Rowe Price | 17.28M | 0.99% | $1.77B | added +17.4% | ≤2013 |
| Wells Fargo & COMPANY/MN | 15.91M | 0.91% | $1.63B | trimmed -2.3% | ≤2013 |
| MFS Investment Management | 15.50M | 0.89% | $1.59B | added +6.8% | ≤2013 |
| Goldman Sachs | 14.51M | 0.83% | $1.49B | trimmed -6.2% | ≤2013 |
| Ameriprise Financial INC | 14.12M | 0.81% | $1.45B | added +7.2% | ≤2013 |
| Deutsche Bank AG\ | 14.09M | 0.81% | $1.45B | added +21.7% | 2013 Q3 |
| State Farm Mutual Automobile Insurance CO | 13.59M | 0.78% | $1.39B | unchanged | ≤2013 |
| BNY Mellon | 12.44M | 0.71% | $1.28B | trimmed -3.7% | ≤2013 |
| Legal & General Group PLC | 12.29M | 0.70% | $1.26B | trimmed -2.7% | ≤2013 |
| Nuveen | 11.19M | 0.64% | $1.15B | trimmed -5.1% | ≤2013 |
| FMR (Fidelity) | 10.85M | 0.62% | $1.11B | added +12.7% | ≤2013 |
| Invesco | 9.85M | 0.56% | $1.01B | trimmed -26.1% | ≤2013 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 8.91M | 0.51% | $914.5M | added +5.1% | ≤2013 |
| Dimensional Fund Advisors | 8.85M | 0.51% | $908.6M | trimmed -2% | ≤2013 |
| Janus Henderson | 8.09M | 0.46% | $830.6M | added +8.6% | ≤2013 |
| Flossbach VON Storch SE | 7.86M | 0.45% | $806.5M | added +21.7% | ≤2013 |
| AllianceBernstein | 7.80M | 0.45% | $800.3M | trimmed -37.4% | ≤2013 |
| Amundi | 7.41M | 0.42% | $760.2M | trimmed -9.5% | 2017 Q4 |
| Royal Bank OF Canada | 6.46M | 0.37% | $663.4M | added +3.3% | ≤2013 |
| Two Sigma | 6.39M | 0.37% | $655.7M | opened | 2026 Q1 |
| Mitsubishi UFJ Asset Management CO., LTD. | 5.99M | 0.34% | $615.2M | trimmed -25.8% | ≤2013 |
| Arrowstreet Capital | 5.52M | 0.32% | $566.7M | added +217% | 2020 Q1 |
| Diamond Hill Capital Management INC | 5.38M | 0.31% | $552.0M | added +4% | ≤2013 |
| D. E. Shaw | 5.28M | 0.30% | $541.9M | added +290.2% | 2019 Q3 |
| Raymond James Financial INC | 5.26M | 0.30% | $540.3M | trimmed -2.6% | ≤2013 |
| Envestnet Asset Management INC | 5.19M | 0.30% | $532.2M | trimmed -5.1% | ≤2013 |
| Manufacturers Life Insurance Company, THE | 5.12M | 0.29% | $525.1M | added +67.4% | ≤2013 |
| Swiss National Bank | 5.10M | 0.29% | $523.7M | added +7% | ≤2013 |
| BNP Paribas Financial Markets | 4.70M | 0.27% | $482.1M | added +7.1% | ≤2013 |
| PNC Financial Services Group, INC. | 4.60M | 0.26% | $471.9M | trimmed -1.4% | ≤2013 |
| CalPERS | 4.47M | 0.26% | $458.5M | trimmed -14.2% | ≤2013 |
| Assenagon Asset Management S.a. | 4.43M | 0.25% | $454.6M | added +303% | 2017 Q3 |
| Fayez Sarofim & CO | 4.28M | 0.24% | $439.5M | trimmed -4.4% | ≤2013 |
| Allianz Asset Management GmbH | 4.21M | 0.24% | $432.3M | trimmed -2.6% | ≤2013 |
| Cibc Bancorp USA INC. | 4.21M | 0.24% | $432.3M | added +0.5% | 2014 Q1 |
| First Trust Advisors LP | 4.18M | 0.24% | $429.0M | trimmed -8% | ≤2013 |
| National Pension Service | 4.09M | 0.23% | $420.2M | added +1.8% | 2014 Q3 |
Largest 50 of 3,016 shown; the full ranked, searchable register is at boothcheck.com/holders/ABT. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.