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Institutional Ownership · SEC Form 13F

Who owns Fennec Pharmaceuticals (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-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

102
Institutional holders
16M
Shares held (tracked funds)
47.6%
Of shares outstanding

How the tape is positioned

The tracked-fund tape on FENC is one-sided between 2026-Q1 and 2026-Q2: 34 added or opened and 2 trimmed or exited — on balance accumulating.

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 12.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 12.9pp 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 2026-Q1 and 2026-Q2, across 102 tracked filers holding FENC, 68 increased or opened the position and 30 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.

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 2026-Q1 and 2026-Q2 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 10

  • Prospect Capital Advisors, LLC$5M
  • JANE STREET GROUP, LLC$3M
  • MARSHALL WACE, LLP$1M
  • RENAISSANCE TECHNOLOGIES LLC$1M
  • CenterBook Partners LP$1M
  • WELLINGTON MANAGEMENT GROUP LLP$909K

Full exits 2

  • Southpoint Capital Advisors LP$17M
  • GENDELL JEFFREY L$511K

Largest adds

  • Rosalind Advisors, Inc.$16M
  • AIGH Capital Management LLC$15M
  • BlackRock, Inc.$10M
  • AWM Investment Company, Inc.$8M
  • Solas Capital Management, LLC$5M
  • VANGUARD CAPITAL MANAGEMENT LLC$4M

Institutional holders

One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.

FundSharesReported value% of valueQuarter
Rosalind Advisors, Inc. added3,188,001$34M19.7%2026-Q2
AIGH Capital Management LLC added2,486,038$27M15.3%2026-Q2
Solas Capital Management, LLC trimmed1,889,366$20M11.6%2026-Q2
BlackRock, Inc. added1,727,069$19M10.6%2026-Q2
AWM Investment Company, Inc. added1,160,296$12M7.2%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC trimmed839,306$9M5.2%2026-Q2
Prospect Capital Advisors, LLC new497,800$5M3.1%2026-Q2
STATE STREET CORP added426,004$5M2.6%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC added402,566$4M2.5%2026-Q2
JANE STREET GROUP, LLC added233,877$3M1.4%2026-Q2
Potomac Capital Management, Inc.224,400$2M1.4%2026-Q2
MORGAN STANLEY added221,920$2M1.4%2026-Q2
VANGUARD PORTFOLIO MANAGEMENT LLC added199,998$2M1.2%2026-Q2
NORTHERN TRUST CORP added167,922$2M1.0%2026-Q2
MARSHALL WACE, LLP added138,758$1M0.9%2026-Q2
RENAISSANCE TECHNOLOGIES LLC added134,200$1M0.8%2026-Q2
Nuveen, LLC added131,482$1M0.8%2026-Q2
Trexquant Investment LP added119,122$1M0.7%2026-Q2
CenterBook Partners LP new118,582$1M0.7%2026-Q2
Lion Point Capital, LP112,434$1M0.7%2026-Q2
BRIDGEWAY CAPITAL MANAGEMENT, LLC added108,005$1M0.7%2026-Q2
Cornerstone Capital, Inc.105,000$1M0.6%2026-Q2
XTX Topco Ltd added93,866$1M0.6%2026-Q2
AQR CAPITAL MANAGEMENT LLC added92,889$999K0.6%2026-Q2
WELLINGTON MANAGEMENT GROUP LLP new84,548$909K0.5%2026-Q2
Quadrature Capital Ltd added75,726$814K0.5%2026-Q2
CITADEL ADVISORS LLC trimmed71,032$764K0.4%2026-Q2
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added70,504$758K0.4%2026-Q2
1492 Capital Management LLC added65,149$700K0.4%2026-Q2
Bank of New York Mellon Corp added61,032$656K0.4%2026-Q2
TWO SIGMA INVESTMENTS, LP new60,332$649K0.4%2026-Q2
Qube Research & Technologies Ltd added58,292$627K0.4%2026-Q2
Point72 Asset Management, L.P. added56,407$606K0.3%2026-Q2
Eleva Capital SAS53,234$327K0.2%2026-Q2
Hartford Financial Management Inc.50,646$544K0.3%2026-Q2
Round Rock Advisors LLC new48,683$523K0.3%2026-Q2
VANGUARD FIDUCIARY TRUST CO added45,400$488K0.3%2026-Q2
STATE OF WISCONSIN INVESTMENT BOARD trimmed38,605$415K0.2%2026-Q2
BNP PARIBAS FINANCIAL MARKETS added36,727$395K0.2%2026-Q2
RHUMBLINE ADVISERS added34,969$376K0.2%2026-Q2
GOLDMAN SACHS GROUP INC trimmed33,452$360K0.2%2026-Q2
Squarepoint Ops LLC trimmed31,132$335K0.2%2026-Q2
PRELUDE CAPITAL MANAGEMENT, LLC29,599$318K0.2%2026-Q2
DEUTSCHE BANK AG\ added28,898$311K0.2%2026-Q2
WELLS FARGO & COMPANY/MN added26,564$286K0.2%2026-Q2
MILLENNIUM MANAGEMENT LLC added26,317$283K0.2%2026-Q2
JONES FINANCIAL COMPANIES LLLP added26,052$287K0.2%2026-Q2
LOS ANGELES CAPITAL MANAGEMENT LLC new25,311$272K0.2%2026-Q2
PRICE T ROWE ASSOCIATES INC /MD/ added23,029$248K0.1%2026-Q2
Brevan Howard Capital Management LP new21,474$231K0.1%2026-Q2
BANK OF AMERICA CORP /DE/ trimmed19,942$214K0.1%2026-Q2
Engineers Gate Manager LP added17,890$192K0.1%2026-Q2
MetLife Investment Management, LLC added16,894$182K0.1%2026-Q2
ALLIANCEBERNSTEIN L.P. added16,570$102K0.1%2026-Q2
LAZARD ASSET MANAGEMENT LLC added16,500$177K0.1%2026-Q2
Invesco Ltd. added15,744$169K0.1%2026-Q2
CITIGROUP INC added13,607$147K0.1%2026-Q2
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed13,372$144K0.1%2026-Q2
Russell Investments Group, Ltd. added13,256$143K0.1%2026-Q2
Kemnay Advisory Services Inc. new12,586$135K0.1%2026-Q2
JPMORGAN CHASE & CO added12,143$134K0.1%2026-Q2
MASTER'S WEALTH MANAGEMENT INC. new11,557$124K0.1%2026-Q2
Police & Firemen's Retirement System of New Jersey added10,558$113K0.1%2026-Q2
NEW YORK STATE COMMON RETIREMENT FUND9,753$105K0.1%2026-Q2
NANO CAP NEW MILLENNIUM GROWTH FUND L P trimmed7,500$81K0.0%2026-Q2
STRS OHIO added6,300$68K0.0%2026-Q2
FMR LLC added5,793$62K0.0%2026-Q2
UBS Group AG trimmed4,709$51K0.0%2026-Q2
BARCLAYS PLC trimmed4,354$47K0.0%2026-Q2
Tower Research Capital LLC (TRC) trimmed3,475$37K0.0%2026-Q2
Legal & General Group Plc trimmed2,714$29K0.0%2026-Q2
ROYAL BANK OF CANADA added2,684$29K0.0%2026-Q2
Ameritas Investment Partners, Inc. added2,635$28K0.0%2026-Q2
IFG Advisory, LLC new2,000$22K0.0%2026-Q2
Arax Advisory Partners added653$7K0.0%2026-Q2
PNC Financial Services Group, Inc. added645$7K0.0%2026-Q2
Pinnacle Wealth Planning Services, Inc.507$5K0.0%2026-Q2
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed400$4K0.0%2026-Q2
MassMutual Private Wealth & Trust, FSB357$4K0.0%2026-Q2
GAMMA Investing LLC added349$4K0.0%2026-Q2
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC303$3K0.0%2026-Q2
Allworth Financial LP added274$3K0.0%2026-Q2
Private Wealth Management Group, LLC trimmed247$3K0.0%2026-Q2
EverSource Wealth Advisors, LLC trimmed188$2K0.0%2026-Q2
NATIONAL BANK OF CANADA /FI/ added141$2K0.0%2026-Q2
Smartleaf Asset Management LLC110$1K0.0%2026-Q2
Sterling Capital Management LLC trimmed102$1K0.0%2026-Q2
Farther Finance Advisors, LLC trimmed95$1K0.0%2026-Q2
IFP Advisors, Inc added92$9890.0%2026-Q2
Cornerstone Planning Group LLC88$9080.0%2026-Q2
Essential Partners LLC added80$8600.0%2026-Q2
OSAIC HOLDINGS, INC.75$8060.0%2026-Q2
Hughes Financial Services, LLC71$7630.0%2026-Q2
ROTHSCHILD INVESTMENT LLC added61$6560.0%2026-Q2
NISA INVESTMENT ADVISORS, LLC46$4950.0%2026-Q2
TD Waterhouse Canada Inc.29$3000.0%2026-Q2
SJS Investment Consulting Inc. new13$1400.0%2026-Q2
True Wealth Design, LLC trimmed9$970.0%2026-Q2
Caitong International Asset Management Co., Ltd added6$640.0%2026-Q2
Fortitude Family Office, LLC new5$540.0%2026-Q2

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