| 0.05% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.0M | $96.7M | +4.5% | 5.040% | 0.00% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $81.4M | -0.1% | 4.242% | 0.00% |
| 6 | STATE STREET CORP | 2.3M | $76.1M | +4.5% | 3.968% | 0.00% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $70.5M | +16.9% | 3.676% | 0.00% |
| 8 | Invesco Ltd. | 1.8M | $59.9M | +28.9% | 3.121% | 0.00% |
| 9 | VICTORY CAPITAL MANAGEMENT INC | 1.5M | $47.6M | -24.6% | 2.480% | 0.03% |
| 10 | VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | 1.1M | $34.8M | -9.6% | 1.817% | 0.31% |
| 11 | MORGAN STANLEY | 1.0M | $33.0M | -1.0% | 1.723% | 0.00% |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 973K | $31.6M | -3.2% | 1.650% | 0.00% |
| 13 | NORTHERN TRUST CORP | 889K | $28.9M | +4.4% | 1.508% | 0.00% |
| 14 | JANE STREET GROUP, LLC | 678K | $22.1M | +1310.4% | 1.150% | 0.00% |
| 15 | Boston Partners | 666K | $21.2M | -15.2% | 1.129% | 0.02% |
| 16 | NEEDHAM INVESTMENT MANAGEMENT LLC | 586K | $19.0M | -3.2% | 0.993% | 0.57% |
| 17 | CITADEL ADVISORS LLC | 504K | $16.4M | +353.9% | 0.856% | 0.00% |
| 18 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 496K | $16.1M | +69.6% | 0.840% | 0.00% |
| 19 | EASTERLY INVESTMENT PARTNERS LLC | 466K | $15.2M | +15.5% | 0.791% | 0.77% |
| 20 | AQR CAPITAL MANAGEMENT LLC | 415K | $13.5M | -14.7% | 0.703% | 0.00% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 398K | $12.9M | +5.1% | 0.675% | 0.00% |
| 22 | Bank of New York Mellon Corp | 380K | $12.4M | +0.6% | 0.645% | 0.00% |
| 23 | HEARTLAND ADVISORS INC | 380K | $12.4M | +2.5% | 0.644% | 0.55% |
| 24 | SEGALL BRYANT & HAMILL, LLC | 374K | $12.2M | +500.0% | 0.634% | 0.14% |
| 25 | TCW GROUP INC | 356K | $11.6M | +11.4% | 0.603% | 0.08% |
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 PLAB — a direct measure of their conviction.
| 87.68% |
| 3.64 pp |
| $1.06B |
| 15% |
| Q4 2024 | 262 | +1.6% | 91.32% | +4.13 pp | $1.25B | 1.0% |
| Q3 2024 | 258 | — | 87.19% | — | $1.26B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
56 institutions opened new positions in PLAB during Q2 2026, while 70 fully exited. 47 added to existing positions and 210 trimmed.
PLAB institutional ownership rose by 0.76 percentage points quarter-over-quarter, with a net change of -15 holders.
The top 10 institutions account for 59.5% of all reported 13F value in PLAB, and the top 25 account for 76.0%.
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.
Photronics, Inc. (PLAB) Institutional Ownership