FENC US Equity

FENNEC PHARMACEUTICALS INC.

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Health Care · Biological Products, (No Diagnostic Substances) · CIK 1211583 · FYE 1231

$9.65

-0.29 (-2.92%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding FENC · 2026-Q1 methodology → sources →

90 holders

% of shares outstanding held

46.6%

Shares held (13F)

16,201,228

Reporting holders

Top holders

largest 90 of 90 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Rosalind Advisors, Inc.	2,908,2012.9M	$18M	8.37%	ADD 11%
2	Southpoint Capital Advisors LP	2,744,7412.7M	$17M	7.90%	—
3	Solas Capital Management, LLC	2,482,1982.5M	$15M	7.15%	TRIM -3%
4	AIGH Capital Management LLC	1,981,5012.0M	$12M	5.70%	ADD 25%
5	BlackRock, Inc.	1,368,1761.4M	$8M	3.94%	ADD 11%
6	VANGUARD CAPITAL MANAGEMENT LLC	897,144897,144	$6M	2.58%	NEW†
7	AWM Investment Company, Inc.	720,135720,135	$4M	2.07%	—
8	GEODE CAPITAL MANAGEMENT, LLC	371,738371,738	$2M	1.07%	ADD 25%
9	STATE STREET CORP	359,055359,055	$2M	1.03%	—
10	Potomac Capital Management, Inc.	224,400224,400	$1M	0.65%	ADD 136%
11	MORGAN STANLEY	211,108211,108	$1M	0.61%	TRIM -13%
12	VANGUARD PORTFOLIO MANAGEMENT LLC	168,473168,473	$1M	0.48%	NEW
13	CITADEL ADVISORS LLC	153,610153,610	$944,702	0.44%	TRIM -23%
14	NORTHERN TRUST CORP	152,123152,123	$935,556	0.44%	ADD 36%
15	Lion Point Capital, LP	112,434112,434	$691,469	0.32%	—
16	Cornerstone Capital, Inc.	105,000105,000	$645,750	0.30%	NEW
17	GENDELL JEFFREY L	83,02483,024	$510,597	0.24%	TRIM -41%
18	BRIDGEWAY CAPITAL MANAGEMENT, LLC	83,00583,005	$510,481	0.24%	—
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	63,53763,537	$390,753	0.18%	ADD 11%
20	Nuveen, LLC	60,94860,948	$374,831	0.18%	ADD 134%
21	THOMPSON SIEGEL & WALMSLEY LLC	57,22657,226	$352,000	0.16%	NEW
22	Squarepoint Ops LLC	56,51056,510	$347,537	0.16%	ADD 331%
23	GOLDMAN SACHS GROUP INC	55,66455,664	$342,334	0.16%	ADD 28%
24	Eleva Capital SAS	53,23453,234	$327,389	0.15%	NEW
25	Bank of New York Mellon Corp	52,46252,462	$322,643	0.15%	ADD 7%
26	Trexquant Investment LP	51,86951,869	$318,994	0.15%	—
27	1492 Capital Management LLC	50,70550,705	$311,836	0.15%	ADD 80%
28	Hartford Financial Management Inc.	50,64650,646	$311,473	0.15%	—
29	STATE OF WISCONSIN INVESTMENT BOARD	43,50043,500	$267,525	0.13%	TRIM -15%
30	VANGUARD FIDUCIARY TRUST CO	38,72438,724	$238,153	0.11%	NEW
31	RHUMBLINE ADVISERS	31,29831,298	$192,475	0.09%	ADD 8%
32	PRELUDE CAPITAL MANAGEMENT, LLC	29,59929,599	$182,034	0.09%	NEW
33	Qube Research & Technologies Ltd	29,37829,378	$180,675	0.08%	TRIM -34%
34	BANK OF AMERICA CORP /DE/	26,40526,405	$162,391	0.08%	ADD 17%
35	AQR CAPITAL MANAGEMENT LLC	24,14624,146	$148,499	0.07%	ADD 59%
36	JONES FINANCIAL COMPANIES LLLP	24,95224,952	$147,466	0.07%	—
37	NANO CAP NEW MILLENNIUM GROWTH FUND L P	21,50021,500	$132,225	0.06%	NEW
38	DEUTSCHE BANK AG\	21,20221,202	$130,392	0.06%	ADD 22%
39	GLOBEFLEX CAPITAL L P	18,34318,343	$112,809	0.05%	NEW
40	PRICE T ROWE ASSOCIATES INC /MD/	16,86516,865	$104,000	0.05%	ADD 35%
41	Engineers Gate Manager LP	15,51615,516	$95,423	0.04%	NEW
42	XTX Topco Ltd	15,25515,255	$93,818	0.04%	TRIM -43%
43	HighTower Advisors, LLC	14,96014,960	$92,004	0.04%	—
44	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13,62113,621	$83,769	0.04%	ADD 25%
45	MetLife Investment Management, LLC	13,50913,509	$83,080	0.04%	ADD 4%
46	ALLIANCEBERNSTEIN L.P.	10,31010,310	$79,387	0.03%	—
47	Invesco Ltd.	11,67711,677	$71,813	0.03%	TRIM -19%
48	JPMORGAN CHASE & CO	11,85911,859	$68,427	0.03%	ADD 21%
49	WELLS FARGO & COMPANY/MN	10,89710,897	$67,016	0.03%	TRIM -58%
50	NEW YORK STATE COMMON RETIREMENT FUND	9,7539,753	$59,981	0.03%	—
51	Legal & General Group Plc	8,6398,639	$52,057	0.02%	ADD 6%
52	State of Alaska, Department of Revenue	6,5706,570	$40,000	0.02%	ADD 318%
53	UBS Group AG	6,4726,472	$39,803	0.02%	ADD 30%
54	BARCLAYS PLC	6,2736,273	$38,579	0.02%	TRIM -83%
55	Police & Firemen's Retirement System of New Jersey	6,2506,250	$38,438	0.02%	—
56	BNP PARIBAS FINANCIAL MARKETS	6,1976,197	$38,112	0.02%	ADD 23%
57	STRS OHIO	5,2005,200	$31,980	0.01%	—
58	Tower Research Capital LLC (TRC)	4,3394,339	$26,685	0.01%	ADD 214%
59	FMR LLC	4,2544,254	$26,162	0.01%	ADD 76%
60	Russell Investments Group, Ltd.	2,8622,862	$17,601	0.01%	TRIM -2%
61	FEDERATED HERMES, INC.	2,4012,401	$14,766	0.01%	TRIM -18%
62	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	1,6031,603	$9,858	0.00%	ADD 11%
63	Ameritas Investment Partners, Inc.	1,4991,499	$9,219	0.00%	—
64	CITIGROUP INC	1,3931,393	$8,315	0.00%	ADD 163%
65	CWM, LLC	1,0631,063	$6,537	0.00%	ADD 42%
66	Sterling Capital Management LLC	744744	$4,576	0.00%	TRIM -28%
67	PNC FINANCIAL SERVICES GROUP, INC.	510510	$3,137	0.00%	TRIM -20%
68	Pinnacle Wealth Planning Services, Inc.	507507	$3,118	0.00%	—
69	Private Wealth Management Group, LLC	397397	$2,442	0.00%	ADD 61%
70	MassMutual Private Wealth & Trust, FSB	357357	$2,196	0.00%	—
71	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	303303	$1,863	0.00%	—
72	Farther Finance Advisors, LLC	280280	$1,795	0.00%	ADD 2%
73	State of Wyoming	233233	$1,433	0.00%	TRIM -25%
74	EverSource Wealth Advisors, LLC	180180	$1,107	0.00%	ADD 33%
75	Smartleaf Asset Management LLC	110110	$635	0.00%	—
76	Cornerstone Planning Group LLC	8888	$592	0.00%	—
77	GAMMA Investing LLC	8484	$517	0.00%	TRIM -26%
78	Hughes Financial Services, LLC	7171	$437	0.00%	TRIM -27%
79	NISA INVESTMENT ADVISORS, LLC	4646	$283	0.00%	—
80	Essential Partners LLC	3838	$234	0.00%	ADD 58%
81	TD Waterhouse Canada Inc.	2929	$173	0.00%	—
82	Allworth Financial LP	2323	$142	0.00%	NEW
83	ROTHSCHILD INVESTMENT LLC	1919	$117	0.00%	NEW
84	MAI Capital Management	1818	$111	0.00%	NEW
85	True Wealth Design, LLC	1818	$111	0.00%	ADD 1700%
86	Sunbelt Securities, Inc.	99	$55	0.00%	ADD 29%
87	Federation des caisses Desjardins du Quebec	66	$36	0.00%	—
88	Wealth Preservation Advisors, LLC	55	$31	0.00%	NEW
89	IFP Advisors, Inc	11	$6	0.00%	NEW
90	Caitong International Asset Management Co., Ltd	11	$6	0.00%	NEW

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Rosalind Advisors, Inc.

1.3M

1.8M

2.0M

2.1M

2.6M

2.9M

$18M

Southpoint Capital Advisors LP

4.1M

2.7M

$17M

Solas Capital Management, LLC

2.3M

2.2M

2.6M

2.5M

$15M

AIGH Capital Management LLC

—

361K

452K

682K

1.6M

2.0M

$12M

BlackRock, Inc.

1.2M

1.3M

1.2M

1.4M

$8M

VANGUARD CAPITAL MANAGEMENT LLC

—

897K

$6M

AWM Investment Company, Inc.

—

712K

720K

$4M

GEODE CAPITAL MANAGEMENT, LLC

303K

311K

305K

301K

297K

372K

$2M

STATE STREET CORP

340K

338K

336K

341K

353K

359K

$2M

Potomac Capital Management, Inc.

—

95K

224K

$1M

MORGAN STANLEY

346K

297K

254K

232K

242K

211K

$1M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

168K

$1M

CITADEL ADVISORS LLC

—

47K

107K

200K

154K

$944,702

NORTHERN TRUST CORP

137K

138K

131K

112K

152K

$935,556

Lion Point Capital, LP

196K

123K

112K

$691,469

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	90	16,201,228	46.6%	$100M
2025-Q4	96	15,538,506	44.7%	$120M
2025-Q3	84	13,873,133	39.9%	$130M
2025-Q2	78	13,602,926	39.2%	$113M
2025-Q1	68	13,390,166	38.5%	$82M
2024-Q4	64	16,048,765	46.2%	$101M
2024-Q3

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Institutional ownership· 13F filers holding FENC · 2026-Q1 methodology → sources →

90 holders

% of shares outstanding held

46.6%

Shares held (13F)

16,201,228

Reporting holders

Top holders

largest 90 of 90 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Rosalind Advisors, Inc.	2,908,2012.9M	$18M	8.37%	ADD 11%
2	Southpoint Capital Advisors LP	2,744,7412.7M	$17M	7.90%	—
3	Solas Capital Management, LLC	2,482,1982.5M	$15M	7.15%	TRIM -3%
4	AIGH Capital Management LLC	1,981,5012.0M	$12M	5.70%	ADD 25%
5	BlackRock, Inc.	1,368,1761.4M	$8M	3.94%	ADD 11%
6	VANGUARD CAPITAL MANAGEMENT LLC	897,144897,144	$6M	2.58%	NEW†
7	AWM Investment Company, Inc.	720,135720,135	$4M	2.07%	—
8	GEODE CAPITAL MANAGEMENT, LLC	371,738371,738	$2M	1.07%	ADD 25%
9	STATE STREET CORP	359,055359,055	$2M	1.03%	—
10	Potomac Capital Management, Inc.	224,400224,400	$1M	0.65%	ADD 136%
11	MORGAN STANLEY	211,108211,108	$1M	0.61%	TRIM -13%
12	VANGUARD PORTFOLIO MANAGEMENT LLC	168,473168,473	$1M	0.48%	NEW
13	CITADEL ADVISORS LLC	153,610153,610	$944,702	0.44%	TRIM -23%
14	NORTHERN TRUST CORP	152,123152,123	$935,556	0.44%	ADD 36%
15	Lion Point Capital, LP	112,434112,434	$691,469	0.32%	—
16	Cornerstone Capital, Inc.	105,000105,000	$645,750	0.30%	NEW
17	GENDELL JEFFREY L	83,02483,024	$510,597	0.24%	TRIM -41%
18	BRIDGEWAY CAPITAL MANAGEMENT, LLC	83,00583,005	$510,481	0.24%	—
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	63,53763,537	$390,753	0.18%	ADD 11%
20	Nuveen, LLC	60,94860,948	$374,831	0.18%	ADD 134%
21	THOMPSON SIEGEL & WALMSLEY LLC	57,22657,226	$352,000	0.16%	NEW
22	Squarepoint Ops LLC	56,51056,510	$347,537	0.16%	ADD 331%
23	GOLDMAN SACHS GROUP INC	55,66455,664	$342,334	0.16%	ADD 28%
24	Eleva Capital SAS	53,23453,234	$327,389	0.15%	NEW
25	Bank of New York Mellon Corp	52,46252,462	$322,643	0.15%	ADD 7%
26	Trexquant Investment LP	51,86951,869	$318,994	0.15%	—
27	1492 Capital Management LLC	50,70550,705	$311,836	0.15%	ADD 80%
28	Hartford Financial Management Inc.	50,64650,646	$311,473	0.15%	—
29	STATE OF WISCONSIN INVESTMENT BOARD	43,50043,500	$267,525	0.13%	TRIM -15%
30	VANGUARD FIDUCIARY TRUST CO	38,72438,724	$238,153	0.11%	NEW
31	RHUMBLINE ADVISERS	31,29831,298	$192,475	0.09%	ADD 8%
32	PRELUDE CAPITAL MANAGEMENT, LLC	29,59929,599	$182,034	0.09%	NEW
33	Qube Research & Technologies Ltd	29,37829,378	$180,675	0.08%	TRIM -34%
34	BANK OF AMERICA CORP /DE/	26,40526,405	$162,391	0.08%	ADD 17%
35	AQR CAPITAL MANAGEMENT LLC	24,14624,146	$148,499	0.07%	ADD 59%
36	JONES FINANCIAL COMPANIES LLLP	24,95224,952	$147,466	0.07%	—
37	NANO CAP NEW MILLENNIUM GROWTH FUND L P	21,50021,500	$132,225	0.06%	NEW
38	DEUTSCHE BANK AG\	21,20221,202	$130,392	0.06%	ADD 22%
39	GLOBEFLEX CAPITAL L P	18,34318,343	$112,809	0.05%	NEW
40	PRICE T ROWE ASSOCIATES INC /MD/	16,86516,865	$104,000	0.05%	ADD 35%
41	Engineers Gate Manager LP	15,51615,516	$95,423	0.04%	NEW
42	XTX Topco Ltd	15,25515,255	$93,818	0.04%	TRIM -43%
43	HighTower Advisors, LLC	14,96014,960	$92,004	0.04%	—
44	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13,62113,621	$83,769	0.04%	ADD 25%
45	MetLife Investment Management, LLC	13,50913,509	$83,080	0.04%	ADD 4%
46	ALLIANCEBERNSTEIN L.P.	10,31010,310	$79,387	0.03%	—
47	Invesco Ltd.	11,67711,677	$71,813	0.03%	TRIM -19%
48	JPMORGAN CHASE & CO	11,85911,859	$68,427	0.03%	ADD 21%
49	WELLS FARGO & COMPANY/MN	10,89710,897	$67,016	0.03%	TRIM -58%
50	NEW YORK STATE COMMON RETIREMENT FUND	9,7539,753	$59,981	0.03%	—
51	Legal & General Group Plc	8,6398,639	$52,057	0.02%	ADD 6%
52	State of Alaska, Department of Revenue	6,5706,570	$40,000	0.02%	ADD 318%
53	UBS Group AG	6,4726,472	$39,803	0.02%	ADD 30%
54	BARCLAYS PLC	6,2736,273	$38,579	0.02%	TRIM -83%
55	Police & Firemen's Retirement System of New Jersey	6,2506,250	$38,438	0.02%	—
56	BNP PARIBAS FINANCIAL MARKETS	6,1976,197	$38,112	0.02%	ADD 23%
57	STRS OHIO	5,2005,200	$31,980	0.01%	—
58	Tower Research Capital LLC (TRC)	4,3394,339	$26,685	0.01%	ADD 214%
59	FMR LLC	4,2544,254	$26,162	0.01%	ADD 76%
60	Russell Investments Group, Ltd.	2,8622,862	$17,601	0.01%	TRIM -2%
61	FEDERATED HERMES, INC.	2,4012,401	$14,766	0.01%	TRIM -18%
62	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	1,6031,603	$9,858	0.00%	ADD 11%
63	Ameritas Investment Partners, Inc.	1,4991,499	$9,219	0.00%	—
64	CITIGROUP INC	1,3931,393	$8,315	0.00%	ADD 163%
65	CWM, LLC	1,0631,063	$6,537	0.00%	ADD 42%
66	Sterling Capital Management LLC	744744	$4,576	0.00%	TRIM -28%
67	PNC FINANCIAL SERVICES GROUP, INC.	510510	$3,137	0.00%	TRIM -20%
68	Pinnacle Wealth Planning Services, Inc.	507507	$3,118	0.00%	—
69	Private Wealth Management Group, LLC	397397	$2,442	0.00%	ADD 61%
70	MassMutual Private Wealth & Trust, FSB	357357	$2,196	0.00%	—
71	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	303303	$1,863	0.00%	—
72	Farther Finance Advisors, LLC	280280	$1,795	0.00%	ADD 2%
73	State of Wyoming	233233	$1,433	0.00%	TRIM -25%
74	EverSource Wealth Advisors, LLC	180180	$1,107	0.00%	ADD 33%
75	Smartleaf Asset Management LLC	110110	$635	0.00%	—
76	Cornerstone Planning Group LLC	8888	$592	0.00%	—
77	GAMMA Investing LLC	8484	$517	0.00%	TRIM -26%
78	Hughes Financial Services, LLC	7171	$437	0.00%	TRIM -27%
79	NISA INVESTMENT ADVISORS, LLC	4646	$283	0.00%	—
80	Essential Partners LLC	3838	$234	0.00%	ADD 58%
81	TD Waterhouse Canada Inc.	2929	$173	0.00%	—
82	Allworth Financial LP	2323	$142	0.00%	NEW
83	ROTHSCHILD INVESTMENT LLC	1919	$117	0.00%	NEW
84	MAI Capital Management	1818	$111	0.00%	NEW
85	True Wealth Design, LLC	1818	$111	0.00%	ADD 1700%
86	Sunbelt Securities, Inc.	99	$55	0.00%	ADD 29%
87	Federation des caisses Desjardins du Quebec	66	$36	0.00%	—
88	Wealth Preservation Advisors, LLC	55	$31	0.00%	NEW
89	IFP Advisors, Inc	11	$6	0.00%	NEW
90	Caitong International Asset Management Co., Ltd	11	$6	0.00%	NEW

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Rosalind Advisors, Inc.

1.3M

1.8M

2.0M

2.1M

2.6M

2.9M

$18M

Southpoint Capital Advisors LP

4.1M

2.7M

$17M

Solas Capital Management, LLC

2.3M

2.2M

2.6M

2.5M

$15M

AIGH Capital Management LLC

—

361K

452K

682K

1.6M

2.0M

$12M

BlackRock, Inc.

1.2M

1.3M

1.2M

1.4M

$8M

VANGUARD CAPITAL MANAGEMENT LLC

—

897K

$6M

AWM Investment Company, Inc.

—

712K

720K

$4M

GEODE CAPITAL MANAGEMENT, LLC

303K

311K

305K

301K

297K

372K

$2M

STATE STREET CORP

340K

338K

336K

341K

353K

359K

$2M

Potomac Capital Management, Inc.

—

95K

224K

$1M

MORGAN STANLEY

346K

297K

254K

232K

242K

211K

$1M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

168K

$1M

CITADEL ADVISORS LLC

—

47K

107K

200K

154K

$944,702

NORTHERN TRUST CORP

137K

138K

131K

112K

152K

$935,556

Lion Point Capital, LP

196K

123K

112K

$691,469

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	90	16,201,228	46.6%	$100M
2025-Q4	96	15,538,506	44.7%	$120M
2025-Q3	84	13,873,133	39.9%	$130M
2025-Q2	78	13,602,926	39.2%	$113M
2025-Q1	68	13,390,166	38.5%	$82M
2024-Q4	64	16,048,765	46.2%	$101M
2024-Q3

Short interest has its own tab now — open SI →

FENC US Equity☆

Institutional ownership· 13F filers holding FENC · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Institutional ownership· 13F filers holding FENC · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

FENC US Equity