Overview
Insider buying was focused in healthcare and services, while selling was dominated by large transactions in health care and technology.
High Signal
QTTB — Advisors Llc Orbimed purchased $15.00M (first recorded purchase). The buy increased their holdings by 56%. Dip Buy: the stock was down 6% in the previous 4 weeks. The total estimated position is notable.
COE — Chief Executive Officer (Huang Jack Jiajia) purchased $4.84M across 5 filings between 2026-05-22 and 2026-05-28 (11th, 21st, 22nd, and 28th largest purchases out of 41 total).
Notable Buys
HOOD — Director (Malka Meyer) purchased $20.02M (largest purchase of HOOD, 1 of 37). 2 other insiders also purchased the stock in the last 30 days. The buy increased their holdings by 8%.
OTLK — Sukhtian Ghiath M. purchased $5.00M (first purchase of OTLK). The buy increased their holdings by 63%.
VTS — Joseph S Steinberg purchased $1.01M (11th largest purchase out of 41). The buy increased their holdings by over 4,000%.
Notable Sells
MDLN — BX Mozart ML-2 Holdco L.P. sold $1.18B across 4 filings on 2026-05-28. L.P. Hellman & Friedman Capital Partners X (Parallel) sold $1.18B across 5 filings on 2026-05-28. These represent large-scale, coordinated sales in the health care sector.
SNOW — Slootman Frank sold $104.6M across 6 filings on 2026-05-29. Mark Garrett sold $25.00M on 2026-05-29. These sales occurred after a period of strong performance, with Slootman Frank reducing his holdings by up to 46% in some filings.
ILMN — Meister Keith A. sold $99.6M across 13 filings between 2026-05-28 and 2026-06-01. VP, Chief Accounting Officer (Ericksen Scott D) sold $305K across 2 filings. Chief Legal Officer (Davies Scott M) sold $98K on 2026-05-29. The sales were spread over several days, with modest reductions in holdings.
TBLA — LLC Apollo Management Holdings GP sold $52.80M on 2026-05-28.
ACT — Inc. Genworth Holdings sold $25.85M on 2026-05-29.
Patterns
- Health care and biotechnology saw both significant insider buying and large-scale selling, indicating sector rotation or divergent views.
- Multiple insiders bought into tickers with recent declines, such as QTTB (down 6% in 4 weeks) and OTLK (up 63% in holdings).
- Technology sector saw heavy selling, particularly in SNOW, with insiders reducing large positions after strong price performance.
Close
Top buy tickers by $ value: QTTB $15.00M, HOOD $20.02M, OTLK $5.00M.
Top sell tickers by $ value: MDLN $2.36B, SNOW $129.6M, ILMN $99.6M.