Among active 13F managers last quarter, 8 opened and 30 added, while 22 reduced; the largest holder to move was American Century Companies Inc (+15%). Over the last 180 days, 7 insiders sold and none bought, a net -$14.9M in open-market trades.
The legs disagree, or only one of them leans.
290 tracked 13F filers disclose a position in PLAB as of the latest SEC 13F filings, a combined $1.8B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.5M | $308.6M | ▲+1.1% Added · +99K sh | Q2 2026 | |
| 2 | Dimensional Fund Advisors LP | 4.0M | $160.1M | ▼−2.3% Reduced · −92K sh | Q1 2026 | |
| 3 | Vanguard Portfolio Management LLC | 3.0M | $96.7M | ▲+4.5% Added · +127K sh | Q2 2026 | |
| 4 | American Century Companies Inc | 2.8M | $114.0M | ▲+15% Added · +359K sh | Q1 2026 | |
| 5 | Vanguard Capital Management LLC | 2.5M | $81.4M | ▼−0.1% Reduced · −2K sh | Q2 2026 | |
| 6 | State Street Corp | 2.3M | $76.1M | ▲+4.5% Added · +100K sh | Q2 2026 | |
| 7 | Geode Capital Management, LLC | 2.2M | $70.5M | ▲+17% Added · +313K sh | Q2 2026 | |
| 8 | Victory Capital Management Inc | 1.9M | $78.3M | ▼−9.5% Reduced · −204K sh | Q1 2026 | |
| 9 | Price T Rowe Associates Inc | 1.6M | $51.1M | ▲+74% Added · +668K sh | Q2 2026 | |
| 10 | Vaughan Nelson Investment Management, L.P. | 1.1M | $34.8M | ▼−9.6% Reduced · −114K sh | Q2 2026 | |
| 11 | Morgan Stanley | 1.0M | $41.5M | ▼−27% Reduced · −382K sh | Q1 2026 | |
| 12 | Charles Schwab Investment Management Inc | 1.0M | $40.6M | ▼−1.8% Reduced · −19K sh | Q1 2026 | |
| 13 | Northern Trust Corp | 851K | $34.4M | ▲+2.0% Added · +17K sh | Q1 2026 | |
| 14 | Janus Henderson Group Ltd. | 823K | $33.3M | ▲+33% Added · +202K sh | Q1 2026 | |
| 15 | Boston Partners | 785K | $31.8M | ▼−3.0% Reduced · −24K sh | Q1 2026 | |
| 16 | Needham Investment Management LLC | 586K | $19.0M | ▼−3.2% Reduced · −20K sh | Q2 2026 | |
| 17 | Qube Research & Technologies Ltd | 548K | $22.1M | ▲+90% Added · +259K sh | Q1 2026 | |
| 18 | AQR Capital Management LLC | 486K | $19.7M | ▲+24% Added · +95K sh | Q1 2026 | |
| 19 | Easterly Investment Partners LLC | 466K | $15.2M | ▲+16% Added · +63K sh | Q2 2026 | |
| 20 | Vanguard Fiduciary Trust Co | 398K | $12.9M | ▲+5.1% Added · +19K sh | Q2 2026 | |
| 21 | Heartland Advisors Inc | 380K | $12.4M | ▲+2.5% Added · +9K sh | Q2 2026 | |
| 22 | Bank of New York Mellon Corp | 378K | $15.3M | ▼−2.9% Reduced · −11K sh | Q1 2026 | |
| 23 | Segall Bryant & Hamill, LLC | 374K | $12.2M | ▲+500% Added · +312K sh | Q2 2026 | |
| 24 | Allianz Asset Management GmbH | 369K | $14.9M | ▲+213% Added · +252K sh | Q1 2026 | |
| 25 | Norges Bank | 361K | $11.5M | ▲New +361K sh | Q4 2025 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership. 2 value rows are withheld because the reported units disagree with same-security peers; share counts are unchanged.
Last quarter, 8 funds opened a new position in PLAB and 30 added to an existing one, while 22 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Microsoft CorpMSFT | 157 funds | $219.2B |
| Amazon.com IncAMZN | 156 funds | $174.2B |
| Nvidia CorpNVDA | 153 funds | $349.4B |
| Apple IncAAPL | 153 funds | $251.5B |
| Alphabet Inc-CL AGOOGL | 153 funds | $153.8B |
| JPMorgan Chase & CoJPM | 149 funds | $56.3B |
| Meta Platforms Inc-Class AMETA | 147 funds | $96.8B |
| Visa Inc-Class A SharesV | 146 funds | $53.3B |
| Berkshire Hathaway Inc-CL BBRK/B | 144 funds | $29.5B |
| Broadcom IncAVGO | 143 funds | $142.0B |
| Alphabet Inc-CL CGOOG | 143 funds | $108.0B |
| Eli Lilly & CoLLY | 143 funds | $74.4B |
Ranked by how many of PLAB's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in PLAB.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Apr 17, 2026 | Zhang Rui | VP, CAO & Corporate Controller | Sell (S) | 5K | $213K |
| Apr 16, 2026 | Lee Kang Jyh | Director | Sell (S) 2 lots, same day | 20K | $919K |
| Apr 15, 2026 | Lee Kang Jyh | Director | Sell (S) | 10K | $451K |
| Apr 14, 2026 | Macricostas Constantine S | Director | Sell (S) | 50K | $2.3M |
| Apr 14, 2026 | Wang Hsueh-Chun | SVP/COO IC & US/EU Mnstrm Ops | Sell (S) | 19K | $872K |
| Apr 13, 2026 | Lee Kang Jyh | Director | Sell (S) | 5K | $225K |
| Apr 13, 2026 | Rivera Eric | President, CFO | Sell (S) | 1K | $45K |
| Apr 9, 2026 | Wang Hsueh-Chun | SVP/COO IC & US/EU Mnstrm Ops | Sell (S) | 12K | $525K |
| Apr 9, 2026 | Lee Kang Jyh | Director | Sell (S) | 5K | $220K |
| Apr 9, 2026 | Rivera Eric | President, CFO | Sell (S) 2 lots, same day | 42K | $1.8M |
| Apr 8, 2026 | Lee Kang Jyh | Director | Sell (S) | 5K | $216K |
| Apr 8, 2026 | Macricostas George | CEO | Sell (S) 3 lots, same day | 121K | $5.2M |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 45 | 40 | – |
Insiders Form 4 open-market | 0 | 7 | -$14.9M |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for PLAB
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/PLAB/capital-change-brief"
Use Arkolith's capital_change_brief for PLAB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PLAB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.