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Institutional Ownership · SEC Form 13F

Who owns Fennec Pharmaceuticals Inc. (FENC)


Which tracked institutional funds hold FENC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See FENC company fundamentals →

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

90
Institutional holders
16M
Shares held (tracked funds)
47.4%
Of shares outstanding

How the tape is positioned

The tracked-fund tape on FENC is one-sided between 2025-Q4 and 2026-Q1: 4 added or opened and 12 trimmed or exited — on balance reducing.

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

FENC’s largest tracked holder by dollar value, Rosalind Advisors, Inc., sizes it at 7.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 7.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in FENC 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 90 tracked filers holding FENC, 54 increased or opened the position and 40 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 FENC 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 3

  • VANGUARD CAPITAL MANAGEMENT LLC$6M
  • VANGUARD PORTFOLIO MANAGEMENT LLC$1M
  • Cornerstone Capital, Inc.$646K

Full exits 3

  • VANGUARD GROUP INC$8M
  • Apis Capital Advisors, LLC$2M
  • MARSHALL WACE, LLP$983K

Largest adds

  • Potomac Capital Management, Inc.$648K

Largest trims

  • Solas Capital Management, LLC$4M
  • Southpoint Capital Advisors LP$4M
  • Rosalind Advisors, Inc.$2M
  • BlackRock, Inc.$1M
  • AWM Investment Company, Inc.$1M
  • CITADEL ADVISORS LLC$593K

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).

FundSharesReported value% of valueQuarter
Rosalind Advisors, Inc. added2,908,201$18M14.9%2026-Q1
Southpoint Capital Advisors LP2,744,741$17M14.1%2026-Q1
Solas Capital Management, LLC trimmed2,482,198$15M12.7%2026-Q1
AIGH Capital Management LLC added1,981,501$12M10.2%2026-Q1
BlackRock, Inc. added1,368,176$8M7.0%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new897,144$6M4.6%2026-Q1
AWM Investment Company, Inc. added720,135$4M3.7%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added371,738$2M1.9%2026-Q1
STATE STREET CORP added359,055$2M1.8%2026-Q1
Potomac Capital Management, Inc. added224,400$1M1.2%2026-Q1
MORGAN STANLEY trimmed211,108$1M1.1%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new168,473$1M0.9%2026-Q1
CITADEL ADVISORS LLC trimmed153,610$945K0.8%2026-Q1
NORTHERN TRUST CORP added152,123$936K0.8%2026-Q1
Lion Point Capital, LP112,434$691K0.6%2026-Q1
Cornerstone Capital, Inc. new105,000$646K0.5%2026-Q1
GENDELL JEFFREY L trimmed83,024$511K0.4%2026-Q1
BRIDGEWAY CAPITAL MANAGEMENT, LLC83,005$510K0.4%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added63,537$391K0.3%2026-Q1
Nuveen, LLC added60,948$375K0.3%2026-Q1
THOMPSON SIEGEL & WALMSLEY LLC new57,226$352K0.3%2026-Q1
Squarepoint Ops LLC added56,510$348K0.3%2026-Q1
GOLDMAN SACHS GROUP INC added55,664$342K0.3%2026-Q1
Eleva Capital SAS new53,234$327K0.3%2026-Q1
Bank of New York Mellon Corp added52,462$323K0.3%2026-Q1
Trexquant Investment LP added51,869$319K0.3%2026-Q1
1492 Capital Management LLC added50,705$312K0.3%2026-Q1
Hartford Financial Management Inc.50,646$311K0.3%2026-Q1
STATE OF WISCONSIN INVESTMENT BOARD trimmed43,500$268K0.2%2026-Q1
VANGUARD FIDUCIARY TRUST CO new38,724$238K0.2%2026-Q1
RHUMBLINE ADVISERS added31,298$192K0.2%2026-Q1
PRELUDE CAPITAL MANAGEMENT, LLC added29,599$182K0.2%2026-Q1
Qube Research & Technologies Ltd trimmed29,378$181K0.2%2026-Q1
BANK OF AMERICA CORP /DE/ added26,405$162K0.1%2026-Q1
AQR CAPITAL MANAGEMENT LLC added24,146$148K0.1%2026-Q1
JONES FINANCIAL COMPANIES LLLP24,952$147K0.1%2026-Q1
NANO CAP NEW MILLENNIUM GROWTH FUND L P new21,500$132K0.1%2026-Q1
DEUTSCHE BANK AG\ added21,202$130K0.1%2026-Q1
GLOBEFLEX CAPITAL L P new18,343$113K0.1%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ added16,865$104K0.1%2026-Q1
Engineers Gate Manager LP new15,516$95K0.1%2026-Q1
XTX Topco Ltd trimmed15,255$94K0.1%2026-Q1
HighTower Advisors, LLC trimmed14,960$92K0.1%2026-Q1
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added13,621$84K0.1%2026-Q1
MetLife Investment Management, LLC added13,509$83K0.1%2026-Q1
ALLIANCEBERNSTEIN L.P.10,310$79K0.1%2026-Q1
Invesco Ltd. trimmed11,677$72K0.1%2026-Q1
JPMORGAN CHASE & CO added11,859$68K0.1%2026-Q1
WELLS FARGO & COMPANY/MN trimmed10,897$67K0.1%2026-Q1
NEW YORK STATE COMMON RETIREMENT FUND9,753$60K0.1%2026-Q1
Legal & General Group Plc added8,639$52K0.0%2026-Q1
EverSource Wealth Advisors, LLC added796$41K0.0%2026-Q1
State of Alaska, Department of Revenue added6,570$40K0.0%2026-Q1
UBS Group AG added6,472$40K0.0%2026-Q1
BARCLAYS PLC trimmed6,273$39K0.0%2026-Q1
Police & Firemen's Retirement System of New Jersey6,250$38K0.0%2026-Q1
BNP PARIBAS FINANCIAL MARKETS added6,197$38K0.0%2026-Q1
STRS OHIO5,200$32K0.0%2026-Q1
Tower Research Capital LLC (TRC) added4,339$27K0.0%2026-Q1
FMR LLC added4,254$26K0.0%2026-Q1
Russell Investments Group, Ltd. trimmed2,862$18K0.0%2026-Q1
FEDERATED HERMES, INC. trimmed2,401$15K0.0%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added1,603$10K0.0%2026-Q1
Ameritas Investment Partners, Inc.1,499$9K0.0%2026-Q1
CITIGROUP INC added1,393$8K0.0%2026-Q1
CWM, LLC added1,063$7K0.0%2026-Q1
Sterling Capital Management LLC trimmed744$5K0.0%2026-Q1
PNC FINANCIAL SERVICES GROUP, INC. trimmed510$3K0.0%2026-Q1
Pinnacle Wealth Planning Services, Inc.507$3K0.0%2026-Q1
VANGUARD GROUP INC added1,067,651$8M6.9%2025-Q4 stale
TANG CAPITAL MANAGEMENT LLC added334,593$3M2.6%2025-Q3 stale
HARBERT FUND ADVISORS, INC. trimmed177,815$2M1.4%2025-Q3 stale
Apis Capital Advisors, LLC added204,000$2M1.3%2025-Q4 stale
MARSHALL WACE, LLP added127,693$983K0.8%2025-Q4 stale
Informed Momentum Co LLC added78,661$653K0.5%2025-Q2 stale
DG Capital Management, LLC trimmed84,213$513K0.4%2025-Q1 stale
Stonepine Capital Management, LLC new50,000$385K0.3%2025-Q4 stale
Hillsdale Investment Management Inc. added44,000$339K0.3%2025-Q4 stale
Manatuck Hill Partners, LLC new30,200$251K0.2%2025-Q2 stale
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added32,460$250K0.2%2025-Q4 stale
ACADIAN ASSET MANAGEMENT LLC added27,059$207K0.2%2025-Q4 stale
SIMPLEX TRADING, LLC trimmed21,270$199K0.2%2025-Q3 stale
MILLENNIUM MANAGEMENT LLC added24,402$188K0.2%2025-Q4 stale
JANE STREET GROUP, LLC trimmed24,044$185K0.2%2025-Q4 stale
Point72 Asset Management, L.P. added21,298$164K0.1%2025-Q4 stale
WEXFORD CAPITAL LP26,414$161K0.1%2025-Q1 stale
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed17,023$159K0.1%2025-Q3 stale
FRANKLIN RESOURCES INC added16,978$159K0.1%2025-Q3 stale
RENAISSANCE TECHNOLOGIES LLC added20,000$154K0.1%2025-Q4 stale
SHERBROOKE PARK ADVISERS LLC trimmed13,742$114K0.1%2025-Q2 stale
Quadrature Capital Ltd trimmed14,761$114K0.1%2025-Q4 stale
HRT FINANCIAL LP trimmed12,395$102K0.1%2025-Q2 stale
LAZARD ASSET MANAGEMENT LLC added13,121$101K0.1%2025-Q4 stale
TWO SIGMA ADVISERS, LP trimmed13,000$100K0.1%2025-Q4 stale
INTECH INVESTMENT MANAGEMENT LLC trimmed10,452$80K0.1%2025-Q4 stale
Corebridge Financial, Inc. added11,664$71K0.1%2025-Q1 stale
ROYAL BANK OF CANADA added2,467$19K0.0%2025-Q4 stale
CIBC Private Wealth Group LLC1,565$12K0.0%2025-Q4 stale
AMALGAMATED BANK trimmed736$6K0.0%2025-Q4 stale
COLDSTREAM CAPITAL MANAGEMENT INC new625$4K0.0%2025-Q1 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.

HoldersTotal shares

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.

Learn how to read institutional ownership