13F manager update
Review latest 13F portfolios
13F
Feed
- Source
- SEC Form 13F
- Action
- Find new buys, exits, increases, and reductions
SEC ownership search
Find SEC ownership changes by company, manager, insider, or CUSIP
Search once and jump to linked CIK, CUSIP, 13F, 13D/G, insider, or company-facts pages.
Fresh SEC changes
Recent filing-backed signals
No recent signal cards are available yet. Use the filing feeds above for the latest SEC updates.
Filing-backed signals
Latest ownership changes
Insider signal
Warren E. Buffett
Insider
Ownership
- CIK
- 0000315090
- Security
- BAC, OXY, VRSN
- Source
- SEC Forms 3/4/5
- Action
- Reported ownership activity
- Magnitude
- $58,673,559,261
- Period
- 17 Mar 2026
Top reported symbols: BAC, OXY, VRSN.
Large-stake radar
Track 13D/G ownership changes
13D/G
Large stake
- Source
- SEC Schedule 13D/G
- Action
- Review new and amended beneficial ownership reports
Company filing context
Apple Inc.
AAPL
Issuer
- CIK
- 0000320193
- Security
- AAPL
- Source
- SEC company facts
- Action
- Open company facts and ownership context
- Magnitude
- Cupertino, CA
Industry: Electronic Computers.
Related SEC paths
Additional CIK/CUSIP links surfaced from recent recovery signals.
SEC-backed rankings
Company-fact rankings
Ownership move preview
Largest parsed ownership moves
Insider buying
Largest net insider buys in the current 3 months window.
Insider market mover
Berkshire Hathaway Inc
Form 4
Insider
- CIK
- BRK-B, BRK-A
- Source
- SEC Forms 3/4/5 aggregate
- Action
- Insider net buying
- Magnitude
- $15,308,372
- Period
- 10 Aug 2026 - 10 Nov 2026
1 net insiders bought over the current 3 months window.