SELLAS Life Sciences Group, Inc. (SLS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

7,028,759Shares held by institutions

$28,115,036Value of institutional holdings

53.13%Institutional ownership %

37.62%Shares Changed QoQ

46No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

SELLAS Life Sciences Group, Inc. (NASDAQ:SLS) appears in 67 institutional 13F filings for the quarter ending December 2025.

Collectively, these holders controlled 40.2% of SELLAS Life Sciences's outstanding shares in December 2025, down from 44.5% in September 2025.
They decreased total shares held in SELLAS Life Sciences by -3.21% from the prior quarter, while the number of investors in SLS increased 42.55% year over year.
Activity in SLS broke down as 35 buyers, 19 sellers, and 13 unchanged among 67 total holders.
Altogether, these fund groups held 43.59Mn shares in SLS by December 2025, down by 1.44Mn shares quarter on quarter, and up 5.47Mn shares year over year.
As of December 31, 2025, the biggest holder of SELLAS Life Sciences is Helikon Investments Ltd at 9.02Mn shares, representing 8.32% of shares outstanding.
Top purchasers of SLS stock for the quarter ending December 2025 included Helikon Investments Ltd (2.21Mn), Principal Financial Group Inc (765.47K), Extract Advisors LLC (519.95K), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (496.57K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (417.58K).
The biggest sellers of SELLAS Life Sciences for the quarter ending December 2025 included L1 Capital Pty Ltd (1.7Mn), Jpmorgan Chase & Co (1.39Mn), Bank Of America Corp /De/ (1.05Mn), Goldman Sachs Group Inc (871.84K), JANE STREET GROUP, LLC (681.8K).
Per Business Quant, the top 10 investors in SLS for the quarter ending December 2025 include Helikon Investments Ltd (9.02Mn), Orion Resource Partners LP (5.0Mn), PSquared Asset Management AG (3.96Mn), L1 Capital Pty Ltd (3.23Mn), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (2.85Mn), Sprott Inc. (2.55Mn), PICTON MAHONEY ASSET MANAGEMENT (2.04Mn), Jpmorgan Chase & Co (1.44Mn), NewGen Asset Management Ltd (1.22Mn), Bank Of America Corp /De/ (1.1Mn).

67 Institutional Holders

7,028,759 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
Sprott Inc.	31 Dec, 2025	-162,458	-5.99%	$0.00
Helikon Investments Ltd	31 Dec, 2025	2,210,452	32.45%	$0.00
Barclays Plc	31 Dec, 2025	4,514	0.00%	$0.00
PICTON MAHONEY ASSET MANAGEMENT	31 Dec, 2025	74,152	3.77%	$0.00
Orion Resource Partners LP	31 Dec, 2025	-454,201	-8.33%	$0.00
Jpmorgan Chase & Co	31 Dec, 2025	-1,390,656	-49.15%	$0.00
PSquared Asset Management AG	31 Dec, 2025	38,957	0.99%	$0.00
Bank Of America Corp /De/	31 Dec, 2025	-1,054,163	-48.86%	$0.00
L1 Capital Pty Ltd	31 Dec, 2025	-1,700,239	-34.49%	$0.00
Morgan Stanley	31 Dec, 2025	395,311	63.20%	$0.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31 Dec, 2025	496,574	21.10%	$0.00
Amundi	31 Dec, 2025	-23,100	-2.49%	$0.00
NewGen Asset Management Ltd	31 Dec, 2025	-428,543	-26.00%	$0.00
Principal Financial Group Inc	31 Dec, 2025	765,470	0.00%	$0.00
TD Waterhouse Canada Inc.	31 Dec, 2025	-123,061	-12.64%	$0.00
MACKENZIE FINANCIAL CORP	31 Dec, 2025	25,439	3.68%	$0.00
UBS Group AG	31 Dec, 2025	171,004	37.66%	$0.00
Goldman Sachs Group Inc	31 Dec, 2025	-871,840	-57.23%	$0.00
Extract Advisors LLC	31 Dec, 2025	519,952	0.00%	$0.00
Janus Henderson Group Plc	31 Dec, 2025	-303,889	-32.48%	$0.00

1 - 20 of 67

Research Tools