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Security record

ATTO

Charts & data for ATTO on Finviz ↗ Sponsored

name pending profile ingest

2Tracked holders
+2Δ holders
207.41KShares held
$3.56MReported value
+2New positions
−0Exits
n/a How these are computed → Explain this at the Research Desk →

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026

Who holds it · Q3 2026
#ManagerSharesΔ sharesValueTheir weightHeld
1 Geode Capital Management ✦ (passive) 206.18K New $3.54M 0.0% New 1 SEC ↗ ×2
2 Citigroup Inc 1.24K New $21,202 0.0% New 1 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.

New buyers

Geode Capital Management $3.54M 0.0%
Citigroup Inc $21,202 0.0%

Exited

No tracked exits this quarter.
Frequently co-owned

What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

Aug 06 GOLDMAN SACHS GROUP INC

Other · 500.00K sh @ 17.00 · $8.50M

Aug 06 WALSH COLIN

Director · 500.00K sh @ 17.00 · $8.50M

Aug 06 venBio Global Strategic…

10% owner · 382.35K sh @ 17.00 · $6.50M

Aug 05 WALSH COLIN

Director · 85.00K sh @ 21.00 · $1.78M

Aug 05 GOLDMAN SACHS GROUP INC

Other · 85.00K sh @ 21.00 · $1.78M

Open-market sales (S)

Aug 05 GOLDMAN SACHS GROUP INC

Other · 672 sh · $14,797

Aug 05 GOLDMAN SACHS GROUP INC

Other · 6.97K sh · $153,549

Aug 05 GOLDMAN SACHS GROUP INC

Other · 400 sh · $8,808

Aug 05 GOLDMAN SACHS GROUP INC

Other · 1.18K sh · $25,771

Aug 05 GOLDMAN SACHS GROUP INC

Other · 1.04K sh · $22,932

Aug 05 GOLDMAN SACHS GROUP INC

Other · 300 sh · $6,252

Aug 05 GOLDMAN SACHS GROUP INC

Other · 443 sh · $9,649

Aug 05 GOLDMAN SACHS GROUP INC

Other · 200 sh · $4,410

Aug 05 GOLDMAN SACHS GROUP INC

Other · 700 sh · $15,449

Aug 05 GOLDMAN SACHS GROUP INC

Other · 1.16K sh · $25,807

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Aug 12 SC 13G: Deep Track Capital, LP

View original SEC filing ↗

Aug 11 SC 13D: Frazier Life Sciences Public Fund, L.P.

1.7% of class · View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q3 2026 · Methodology · Get this via the API