Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in PLAB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.4M | $379.3M | +6.3% | 15.919% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 4.0M | $160.1M | -2.3% | 6.720% | 0.03% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.8M | $115.0M | — | 4.824% | 0.01% |
| 4 | AMERICAN CENTURY COMPANIES INC | 2.8M | $114.0M | +14.6% | 4.782% | 0.06% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $101.1M | — | 4.245% | 0.00% |
| 6 | STATE STREET CORP | 2.2M | $90.5M | -0.2% | 3.798% | 0.00% |
| 7 | VICTORY CAPITAL MANAGEMENT INC | 1.9M | $78.3M | -9.5% | 3.288% | 0.05% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1.9M | $75.0M | +1.4% | 3.145% | 0.00% |
| 9 | Invesco Ltd. | 1.4M | $57.7M | -7.1% | 2.421% | 0.01% |
| 10 | VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | 1.2M | $47.9M | — | 2.010% | 0.48% |
| 11 | MORGAN STANLEY | 1.0M | $41.5M | -27.1% | 1.740% | 0.00% |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.0M | $40.6M | -1.8% | 1.704% | 0.01% |
| 13 | NORTHERN TRUST CORP | 851K | $34.4M | +2.0% | 1.444% | 0.00% |
| 14 | JANUS HENDERSON GROUP PLC | 823K | $33.3M | +32.5% | 1.397% | 0.02% |
| 15 | Boston Partners | 785K | $31.8M | -3.0% | 1.332% | 0.03% |
| 16 | NEEDHAM INVESTMENT MANAGEMENT LLC | 605K | $24.4M | -21.9% | 1.026% | 1.25% |
| 17 | Qube Research & Technologies Ltd | 548K | $22.1M | +89.8% | 0.929% | 0.03% |
| 18 | Polar Capital Holdings Plc | 513K | $20.7M | — | 0.871% | 0.07% |
| 19 | AQR CAPITAL MANAGEMENT LLC | 486K | $19.7M | +24.2% | 0.825% | 0.01% |
| 20 | Clark Capital Management Group, Inc. | 406K | $16.4M | +50.4% | 0.689% | 0.10% |
| 21 | EASTERLY INVESTMENT PARTNERS LLC | 404K | $16.1M | -4.5% | 0.685% | 1.23% |
| 22 | VANGUARD FIDUCIARY TRUST CO | 379K | $15.3M | — | 0.642% | 0.00% |
| 23 | Bank of New York Mellon Corp | 378K | $15.3M | -2.9% | 0.641% | 0.00% |
| 24 | ROYCE & ASSOCIATES LP | 374K | $15.1M | -2.8% | 0.634% | 0.15% |
| 25 | HEARTLAND ADVISORS INC | 371K | $15.0M | -3.8% | 0.629% | 0.76% |
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.
Filings activity in PLAB 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 | 325 | +6.6% | 109.76% | +22.78 pp | $2.06B | +26% |
| Q4 2025 | 305 | +17% | 86.98% | +26.43 pp | $1.63B | +44% |
| Q3 2025 | 260 | +3.2% | 60.55% | +10.30 pp | $1.13B | +20% |
| Q2 2025 | 252 | +1.2% | 50.25% | 6.36 pp | $942M | 11% |
| Q1 2025 | 249 | 5.0% | 56.61% | 9.86 pp | $1.06B | 15% |
| Q4 2024 | 262 | +1.6% | 66.47% | 0.64 pp | $1.25B | 1.0% |
| Q3 2024 | 258 | 4.8% | 67.11% | 0.05 pp | $1.26B | 0.1% |
| Q2 2024 | 271 | — | 67.16% | — | $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.
Quick answers to the most common questions about buying PLAB stock.
Based on Q1 2026 13F filings, institutional ownership of Photronics, Inc. stands at 109.8%, held across 325 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of PLAB, with approximately 9,387,060 shares worth $0.38B 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 PLAB.
Our composite Smart Money Score for PLAB is 49 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
76 institutions opened new positions in PLAB during Q1 2026, while 56 fully exited. 207 added to existing positions and 41 trimmed.
PLAB institutional ownership rose by 22.78 percentage points quarter-over-quarter, with a net change of +20 holders.
The top 10 institutions account for 59.3% of all reported 13F value in PLAB, and the top 25 account for 76.8%.
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.
Photronics, Inc. (PLAB) Institutional Ownership