SLS

Sellas Life Sciences Group I Cross-source read$11.29 3.71%
Health CareCUSIP 81642T209· EOD Sep 15, 2026

Among active 13F managers last quarter, 19 opened and 11 added, while 7 reduced; the largest holder to move was Anson Funds Management LP (new position). No open-market insider trades in the last 180 days.

Tracked 13F holders
169
83 in Q2 2026 filings
13F value (tracked)
$855.2M
Smart-money readBullish
Net sellingNet buying
Funds · active managers, latest 13F
30 adding · 7 trimming
Insiders · Form 4 open-market, 180d
0 buying · 0 selling
US House · STOCK Act, 180d
0 buying · 0 selling

Funds lean in and no leg opposes.

Price & smart-money activity

$11.29 3.71%5Y +15.3%
$0.48$4.39$8.31$12.22$16.142021202220232024202520266337237343353222474543544415432181510301352163418
Hover for who · click for detailEnd-of-day closing prices52w $1.39 – $15.46

Who owns SLS?

169 tracked 13F filers · ranked by shares held

169 tracked 13F filers disclose a position in SLS as of the latest SEC 13F filings, a combined $855.2M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1BlackRock, Inc.15.1M
$222.4M
+24%
Added · +2.9M sh
Q2 2026
2State Street Corp13.0M
$191.8M
+55%
Added · +4.6M sh
Q2 2026
3Vanguard Capital Management LLC8.2M
$121.4M
+9.3%
Added · +700K sh
Q2 2026
4Geode Capital Management, LLC4.9M
$72.1M
+25%
Added · +972K sh
Q2 2026
5Anson Funds Management LP4.5M
$66.4M
New
+4.5M sh
Q2 2026
6Vanguard Portfolio Management LLC2.2M
$31.9M
+48%
Added · +698K sh
Q2 2026
7Marshall Wace, LLP2.0M
$8.6M
+52%
Added · +696K sh
Q1 2026
8Jones Financial Companies LLLP1.7M
$7.3M
+290%
Added · +1.2M sh
Q1 2026
9Morgan Stanley1.3M
$5.7M
+50%
Added · +445K sh
Q1 2026
10Vanguard Fiduciary Trust Co1.3M
$19.7M
+11%
Added · +132K sh
Q2 2026
11Northern Trust Corp1.3M
$5.4M
+37%
Added · +345K sh
Q1 2026
12Dagco, Inc.1.2M
$18.2M
+20%
Added · +204K sh
Q2 2026
13UBS Group AG745K
$3.2M
15×
Added · +697K sh
Q1 2026
14Nuveen, LLC671K
$2.8M
−34%
Reduced · −353K sh
Q1 2026
15Bank Of America Corp642K
$2.7M
+536%
Added · +541K sh
Q1 2026
16Goldman Sachs Group Inc556K
$2.4M
+35%
Added · +144K sh
Q1 2026
17Charles Schwab Investment Management Inc481K
$2.0M
+18%
Added · +72K sh
Q1 2026
18Bank of New York Mellon Corp478K
$2.0M
+87%
Added · +222K sh
Q1 2026
19Two Sigma Investments, LP403K
$1.7M
−63%
Reduced · −679K sh
Q1 2026
20Susquehanna International Group, LLP397K
$1.7M
+14%
Added · +47K sh
Q1 2026
21Simplex Trading, LLC295K
$1.2M
New
+295K sh
Q1 2026
22Everhart Financial Group, Inc.288K
$4.3M
−21%
Reduced · −76K sh
Q2 2026
23Rafferty Asset Management, LLC240K
$3.5M
−3.8%
Reduced · −10K sh
Q2 2026
24Wells Fargo & Company226K
$955K
−25%
Reduced · −74K sh
Q1 2026
25Jefferies Financial Group Inc.200K
$3.0M
New
+200K sh
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is SLS being bought or sold by institutions?

Last quarter, 19 funds opened a new position in SLS and 11 added to an existing one, while 7 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
19
funds took a first position
Added
11
added to an existing position
Reduced
7
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own SLS also own

CompanyCo-held byTheir position there
Amazon.com IncAMZN87 funds$83.0B
Nvidia CorpNVDA85 funds$181.1B
Apple IncAAPL84 funds$128.4B
Microsoft CorpMSFT84 funds$103.7B
Alphabet Inc-CL AGOOGL84 funds$76.5B
Broadcom IncAVGO84 funds$74.5B
Micron Technology IncMU83 funds$29.6B
Meta Platforms Inc-Class AMETA82 funds$49.0B
Advanced Micro DevicesAMD82 funds$32.1B
Tesla IncTSLA82 funds$30.0B
Alphabet Inc-CL CGOOG81 funds$60.6B
Berkshire Hathaway Inc-CL BBRK/B81 funds$18.0B

Ranked by how many of SLS's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in SLS.

Insider activity (Form 4)

Full insider page →
Net · 180d
$0
0 open-market transactions
DateInsiderRoleActionSharesValue
Nov 19, 2025Kalin Katherine BachDirectorBuy (P)63K$101K
Jun 12, 2025Van Nostrand Robert LDirectorBuy (P)10K$15K
May 30, 2025Wasman JaneDirectorBuy (P)20K$34K
May 22, 2025Kalin Katherine BachDirectorBuy (P)20K$36K
Dec 5, 2022Stergiou Angelos M.President and CEO, DirectorSell (S)6K$17K
Dec 5, 2022Wood Barbara AEVP, Gen. Counsel, Corp. Sec.Sell (S)2K$6K
Dec 5, 2022Burns John ThomasSenior VP, Finance & CAOSell (S)1K$3K
Dec 2, 2021Wood Barbara AEVP, Gen. Counsel, Corp. Sec.Sell (S)847$5K
Dec 2, 2021Burns John ThomasVP, Finance & Corp ControllerSell (S)231$1K
Dec 2, 2021Stergiou Angelos M.President and CEO, DirectorSell (S)2K$13K
Dec 31, 2018Stergiou Angelos M.President and CEO, DirectorSell (S)23K$29K
Jun 20, 2017Nisi RudolphDirectorSell (S)500$275

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
4712
Insiders
Form 4 open-market
00$0
US House
STOCK Act trades
00$0
Sector rotation
SLS is in Health Care, which smart money is rotating OUT OF
$7.6B

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

83 tracked filers in Q2 2026 filingsstill filing
072143Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $323.2M
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

15 most recent

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Connected entities for SLS

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Ask your agent what changed in SLS

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/SLS/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for SLS.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for SLS. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.