Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ATR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.1M | $766.6M | +0.6% | 9.449% | 0.01% |
| 2 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | 4.7M | $597.9M | 0.0% | 7.370% | 0.47% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.8M | $474.8M | — | 5.852% | 0.03% |
| 4 | MORGAN STANLEY | 3.4M | $425.4M | -16.6% | 5.244% | 0.03% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.9M | $363.6M | — | 4.482% | 0.01% |
| 6 | STATE STREET CORP | 2.8M | $350.9M | -0.3% | 4.325% | 0.01% |
| 7 | VICTORY CAPITAL MANAGEMENT INC | 2.4M | $304.8M | +5.6% | 3.757% | 0.20% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $213.5M | +4.6% | 2.631% | 0.01% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 1.5M | $189.6M | +15.7% | 2.337% | 0.04% |
| 10 | Boston Trust Walden Corp | 1.3M | $170.1M | -4.6% | 2.096% | 1.40% |
| 11 | FIDUCIARY MANAGEMENT INC /WI/ | 1.3M | $157.8M | +0.4% | 1.945% | 1.96% |
| 12 | AQR CAPITAL MANAGEMENT LLC | 1.2M | $153.7M | +45.7% | 1.909% | 0.07% |
| 13 | River Road Asset Management, LLC | 1.2M | $148.3M | +28.3% | 1.828% | 1.68% |
| 14 | Neuberger Berman Group LLC | 1.2M | $148.0M | +4.8% | 1.824% | 0.11% |
| 15 | NORTHERN TRUST CORP | 1.1M | $134.6M | +0.3% | 1.658% | 0.02% |
| 16 | FMR LLC | 1.0M | $129.6M | +2.5% | 1.597% | 0.01% |
| 17 | LONDON CO OF VIRGINIA | 829K | $104.4M | -8.9% | 1.287% | 0.64% |
| 18 | Mawer Investment Management Ltd. | 657K | $82.8M | -68.0% | 1.021% | 0.54% |
| 19 | Williams Jones Wealth Management, LLC. | 587K | $74.0M | -2.7% | 0.912% | 0.91% |
| 20 | FEDERATED HERMES, INC. | 560K | $70.6M | +2.7% | 0.870% | 0.11% |
| 21 | FIRST TRUST ADVISORS LP | 539K | $67.9M | +42.5% | 0.836% | 0.05% |
| 22 | Bank of New York Mellon Corp | 506K | $63.7M | -5.8% | 0.785% | 0.01% |
| 23 | BANK OF AMERICA CORP /DE/ | 486K | $61.2M | +7.1% | 0.754% | 0.00% |
| 24 | D. E. Shaw & Co., Inc. | 482K | $60.7M | +144.5% | 0.749% | 0.06% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 465K | $58.6M | +2.3% | 0.722% | 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 ATR — a direct measure of their conviction.
Filings activity in ATR 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 | 532 | +6.8% | 94.97% | +2.01 pp | $7.20B | +2.2% |
| Q4 2025 | 498 | +2.7% | 92.96% | 9.12 pp | $7.05B | 8.9% |
| Q3 2025 | 485 | 2.4% | 102.08% | 19.72 pp | $7.74B | 16% |
| Q2 2025 | 497 | +1.8% | 121.80% | +8.24 pp | $9.23B | +7.3% |
| Q1 2025 | 488 | 0.8% | 113.56% | 6.19 pp | $8.61B | 5.2% |
| Q4 2024 | 492 | +7.2% | 119.75% | +1.31 pp | $9.08B | +1.1% |
| Q3 2024 | 459 | 0.2% | 118.44% | +12.68 pp | $8.98B | +12% |
| Q2 2024 | 460 | — | 105.76% | — | $8.02B | — |
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 ATR stock.
Based on Q1 2026 13F filings, institutional ownership of AptarGroup, Inc. stands at 95.0%, held across 532 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ATR, with approximately 6,083,518 shares worth $0.77B 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 ATR.
Our composite Smart Money Score for ATR is 54 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
94 institutions opened new positions in ATR during Q1 2026, while 60 fully exited. 305 added to existing positions and 131 trimmed.
ATR institutional ownership rose by 2.01 percentage points quarter-over-quarter, with a net change of +34 holders.
The top 10 institutions account for 53.6% of all reported 13F value in ATR, and the top 25 account for 74.6%.
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.
AptarGroup, Inc. (ATR) Institutional Ownership