Who owns PSNL (PSNL)
Which tracked institutional funds hold PSNL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PSNL company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
24 tracked funds added or opened PSNL while 37 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
PSNL’s largest tracked holder by dollar value, Merck & Co., Inc., sizes it at 25.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 25.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in PSNL divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 141 tracked filers holding PSNL, 85 increased or opened the position and 57 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in PSNL between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 13
- Deep Track Capital, LP$19M
- VANGUARD CAPITAL MANAGEMENT LLC$18M
- Casdin Capital, LLC$10M
- VANGUARD PORTFOLIO MANAGEMENT LLC$4M
- MILLENNIUM MANAGEMENT LLC$3M
- VANGUARD FIDUCIARY TRUST CO$2M
Full exits 7
- VANGUARD GROUP INC$26M
- NEXT CENTURY GROWTH INVESTORS LLC$5M
- ORACLE INVESTMENT MANAGEMENT INC$3M
- JANE STREET GROUP, LLC$1M
- D.A. DAVIDSON & CO.$1M
- SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC$867K
Largest adds
- T. Rowe Price Investment Management, Inc.$15M
- JPMORGAN CHASE & CO$3M
- GOLDMAN SACHS GROUP INC$2M
- Portolan Capital Management, LLC$2M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$705K
- Russell Investments Group, Ltd.$616K
Largest trims
- Merck & Co., Inc.$22M
- LIGHTSPEED MANAGEMENT COMPANY, L.L.C.$13M
- ARK Investment Management LLC$12M
- BlackRock, Inc.$8M
- AIGH Capital Management LLC$5M
- Aberdeen Group plc$4M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Merck & Co., Inc. | 14,044,943 | $89M | 15.3% | 2026-Q1 |
| LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | 8,160,734 | $52M | 8.9% | 2026-Q1 |
| ARK Investment Management LLC added | 7,944,112 | $51M | 8.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 7,592,807 | $48M | 8.3% | 2026-Q1 |
| BlackRock, Inc. added | 5,389,885 | $34M | 5.9% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 4,758,091 | $30M | 5.2% | 2026-Q1 |
| Aberdeen Group plc added | 3,488,308 | $22M | 3.8% | 2026-Q1 |
| Deep Track Capital, LP new | 3,000,000 | $19M | 3.3% | 2026-Q1 |
| AIGH Capital Management LLC | 2,900,000 | $18M | 3.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,868,463 | $18M | 3.1% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 2,183,572 | $14M | 2.4% | 2026-Q1 |
| Blue Water Life Science Advisors, LP | 1,676,300 | $11M | 1.8% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,650,141 | $11M | 1.8% | 2026-Q1 |
| Casdin Capital, LLC new | 1,600,000 | $10M | 1.7% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,297,655 | $8M | 1.4% | 2026-Q1 |
| STATE STREET CORP added | 1,134,170 | $7M | 1.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,066,248 | $7M | 1.2% | 2026-Q1 |
| PFM Health Sciences, LP added | 870,097 | $6M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 737,132 | $5M | 0.8% | 2026-Q1 |
| Portolan Capital Management, LLC added | 736,713 | $5M | 0.8% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 575,490 | $4M | 0.6% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 560,539 | $4M | 0.6% | 2026-Q1 |
| HOWLAND CAPITAL MANAGEMENT LLC | 547,115 | $3M | 0.6% | 2026-Q1 |
| STATE OF MICHIGAN RETIREMENT SYSTEM | 493,798 | $3M | 0.5% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 484,270 | $3M | 0.5% | 2026-Q1 |
| Amova Asset Management Americas, Inc. trimmed | 484,270 | $3M | 0.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 419,128 | $3M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 405,800 | $3M | 0.4% | 2026-Q1 |
| UBS Group AG added | 383,503 | $2M | 0.4% | 2026-Q1 |
| Nuveen, LLC added | 343,520 | $2M | 0.4% | 2026-Q1 |
| Wellington Shields Capital Management, LLC trimmed | 339,733 | $2M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 339,508 | $2M | 0.4% | 2026-Q1 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd added | 323,374 | $2M | 0.4% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 308,696 | $2M | 0.3% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. new | 300,000 | $2M | 0.3% | 2026-Q1 |
| Wellington Shields & Co., LLC | 292,489 | $2M | 0.3% | 2026-Q1 |
| Swiss Life Asset Management Ltd new | 30,116 | $2M | 0.3% | 2026-Q1 |
| PERKINS CAPITAL MANAGEMENT INC | 239,000 | $2M | 0.3% | 2026-Q1 |
| MORGAN STANLEY added | 237,315 | $2M | 0.3% | 2026-Q1 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P trimmed | 235,000 | $1M | 0.3% | 2026-Q1 |
| Bruce & Co., Inc. | 233,000 | $1M | 0.3% | 2026-Q1 |
| FIRST MANHATTAN CO. LLC. trimmed | 230,600 | $1M | 0.3% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 209,826 | $1M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP added | 208,891 | $1M | 0.2% | 2026-Q1 |
| ROYCE & ASSOCIATES LP new | 156,036 | $994K | 0.2% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 149,336 | $951K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 144,626 | $921K | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 139,046 | $886K | 0.2% | 2026-Q1 |
| Williams Jones Wealth Management, LLC. | 134,072 | $854K | 0.1% | 2026-Q1 |
| LPL Financial LLC trimmed | 132,012 | $841K | 0.1% | 2026-Q1 |
| Bank of New York Mellon Corp added | 124,641 | $794K | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 114,683 | $731K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 111,306 | $709K | 0.1% | 2026-Q1 |
| TD Asset Management Inc trimmed | 105,678 | $673K | 0.1% | 2026-Q1 |
| Swiss National Bank added | 105,400 | $671K | 0.1% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 101,937 | $649K | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 90,711 | $578K | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP added | 82,175 | $523K | 0.1% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 78,742 | $502K | 0.1% | 2026-Q1 |
| Janney Montgomery Scott LLC added | 75,000 | $478K | 0.1% | 2026-Q1 |
| Green Alpha Advisors, LLC trimmed | 66,409 | $423K | 0.1% | 2026-Q1 |
| Aquatic Capital Management LLC added | 64,269 | $409K | 0.1% | 2026-Q1 |
| AlphaCentric Advisors LLC added | 64,032 | $408K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 63,111 | $402K | 0.1% | 2026-Q1 |
| Invesco Ltd. added | 62,745 | $400K | 0.1% | 2026-Q1 |
| FMR LLC added | 62,686 | $399K | 0.1% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC trimmed | 61,292 | $390K | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 58,972 | $376K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 51,577 | $329K | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd trimmed | 38,722 | $247K | 0.0% | 2026-Q1 |
| Pathstone Holdings, LLC trimmed | 38,449 | $245K | 0.0% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 28,700 | $228K | 0.0% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 35,517 | $226K | 0.0% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 34,980 | $223K | 0.0% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 34,899 | $222K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 3,253,797 | $26M | 4.4% | 2025-Q4 stale |
| NEXT CENTURY GROWTH INVESTORS LLC added | 624,363 | $5M | 0.8% | 2025-Q4 stale |
| ExodusPoint Capital Management, LP added | 437,369 | $3M | 0.5% | 2025-Q2 stale |
| ORACLE INVESTMENT MANAGEMENT INC added | 339,343 | $3M | 0.5% | 2025-Q4 stale |
| MARSHALL WACE, LLP added | 696,286 | $2M | 0.4% | 2025-Q1 stale |
| JANE STREET GROUP, LLC trimmed | 171,166 | $1M | 0.2% | 2025-Q4 stale |
| D.A. DAVIDSON & CO. new | 145,507 | $1M | 0.2% | 2025-Q4 stale |
| JBF Capital, Inc. new | 166,104 | $1M | 0.2% | 2025-Q3 stale |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 108,951 | $867K | 0.1% | 2025-Q4 stale |
| Informed Momentum Co LLC trimmed | 116,162 | $762K | 0.1% | 2025-Q2 stale |
| CITADEL ADVISORS LLC trimmed | 92,162 | $734K | 0.1% | 2025-Q4 stale |
| Polar Asset Management Partners Inc. new | 71,700 | $470K | 0.1% | 2025-Q2 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 68,679 | $451K | 0.1% | 2025-Q2 stale |
| Trexquant Investment LP added | 122,959 | $432K | 0.1% | 2025-Q1 stale |
| Verition Fund Management LLC added | 51,804 | $412K | 0.1% | 2025-Q4 stale |
| POLEN CAPITAL MANAGEMENT LLC new | 50,705 | $404K | 0.1% | 2025-Q4 stale |
| Schonfeld Strategic Advisors LLC added | 114,531 | $402K | 0.1% | 2025-Q1 stale |
| Man Group plc added | 49,373 | $324K | 0.1% | 2025-Q2 stale |
| Mach-1 Financial Group, LLC new | 48,822 | $320K | 0.1% | 2025-Q2 stale |
| EntryPoint Capital, LLC added | 83,628 | $294K | 0.1% | 2025-Q1 stale |
| Dynamic Technology Lab Private Ltd added | 76,729 | $269K | 0.0% | 2025-Q1 stale |
| OMERS ADMINISTRATION Corp trimmed | 75,200 | $264K | 0.0% | 2025-Q1 stale |
| Sanctuary Advisors, LLC new | 39,974 | $261K | 0.0% | 2025-Q3 stale |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 39,629 | $260K | 0.0% | 2025-Q2 stale |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 39,158 | $256K | 0.0% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.