Company · Ownership research

SELLAS Life Sciences Group, Inc. SLS

CIK 0001390478 · CUSIP 81642T209

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 81642T209 (SLS), not CUSIP 81642T959 (SLS), CUSIP 81642T909 (SLS), and does not merge CUSIPs.

This page lists the top 20 of 31 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$2.13M 1,786,334 shares	0.00%	+273.10K(+18.00%)Added	SEC filing ↗ Aug 13, 2024	▾
02	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$615.33K 517,008 shares	0.00%	+243.94K(+89.30%)Added	SEC filing ↗ Aug 9, 2024	▾
03	BlackRock Inc. CIK 1364742 · View history	$512.14K 430,368 shares	0.00%	+152.15K(+54.70%)Added	SEC filing ↗ Aug 13, 2024	▾
04	Opus Capital Group, LLC CIK 1330325 · View history	$263.00K 221,000 shares	0.04%	+20.40K(+10.20%)Added	SEC filing ↗ Jul 31, 2024	▾
05	Equitable Holdings, Inc. CIK 1333986 · View history	$249.90K 210,000 shares	0.00%	+10.00K(+5.00%)Added	SEC filing ↗ Aug 14, 2024	▾
06	Diametric Capital, LP CIK 1719087 · View history	$182.09K 153,019 shares	0.10%	+153.02KNew	SEC filing ↗ Aug 13, 2024	▾
07	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$179.03K 150,448 shares	0.00%	+150.45KNew	SEC filing ↗ Aug 14, 2024	▾
08	STATE STREET CORP CIK 93751 · View history	$159.50K 134,029 shares	0.00%	+36.90K(+38.00%)Added	SEC filing ↗ Aug 14, 2024	▾
09	NORTHERN TRUST CORP CIK 73124 · View history	$120.00K 100,843 shares	0.00%	+12.11K(+13.70%)Added	SEC filing ↗ Aug 14, 2024	▾
10	Virtu Financial LLC CIK 1533964 · View history	$76.00K 63,843 shares	0.01%	+24.41K(+61.90%)Added	SEC filing ↗ Aug 9, 2024	▾
11	PRELUDE CAPITAL MANAGEMENT, LLC CIK 1387508 · View history	$66.31K 55,726 shares	0.01%	+55.73KNew	SEC filing ↗ Aug 14, 2024	▾
12	LPL Financial LLC CIK 1403438 · View history	$61.75K 51,894 shares	0.00%	+51.89KNew	SEC filing ↗ Aug 7, 2024	▾
13	Mariner, LLC CIK 1373442 · View history	$53.47K 44,929 shares	0.00%	+19.67K(+77.90%)Added	SEC filing ↗ Aug 13, 2024	▾
14	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$38.61K 32,446 shares	0.00%	+32.45KNew	SEC filing ↗ Aug 9, 2024	▾
15	JANE STREET GROUP, LLC CIK 1595888 · View history	$33.31K 27,994 shares	0.00%	+27.99KNew	SEC filing ↗ Aug 15, 2024	▾
16	INDEPENDENT FINANCIAL GROUP, LLC CIK 275484 · View history	$27.67K 23,250 shares	0.00%	+3.00K(+14.80%)Added	SEC filing ↗ Jun 12, 2026	▾
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$19.32K 16,238 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 12, 2024	▾
18	COMMONWEALTH EQUITY SERVICES, LLC CIK 312272 · View history	$19.00K 15,554 shares	0.00%	+1.50K(+10.70%)Added	SEC filing ↗ Jul 31, 2024	▾
19	WEDBUSH SECURITIES INC CIK 1142495 · View history	$18.00K 15,000 shares	0.00%	+15.00KNew	SEC filing ↗ Aug 7, 2024	▾
20	Tower Research Capital LLC (TRC) CIK 1533421 · View history	$16.22K 13,631 shares	0.00%	-7.09K(-34.20%)Reduced	SEC filing ↗ Aug 13, 2024	▾

Showing 20 / 31 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

4,080,296

Not deduplicated across managers

Disclosed value

$4.86M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SELLAS Life Sciences Group, Inc. · Q2 2024

Explore all 31 reporting institutions.

This page includes 20 of 31 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 31 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"81642T209","quarter":"2024Q2","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.