What big investors reported

What changed since the prior report

Green means the manager reported a new or larger share amount. Red means a smaller amount or the stock was no longer listed. This compares two delayed reports; it does not show the exact trade.

PUT and CALL are contract labels, not common-share holdings. A 13F reports these option rows but does not establish whether the strategy is bullish, bearish, hedged, or part of a spread. It also does not reveal strike, expiry, premium, or the rest of the manager's book.

• PUTAMD ADVANCED MICRO DEVICES INC$9.36 B
  LARGER REPORTED AMOUNT16,109,000 shPUT is the filed contract type.
• CALLAMD ADVANCED MICRO DEVICES INC$9.02 B
  LARGER REPORTED AMOUNT15,530,900 shCALL is the filed contract type.
• PUTDELL DELL TECHNOLOGIES INC$2.08 B
  LARGER REPORTED AMOUNT4,828,400 shPUT is the filed contract type.
• CALLBRK-B BERKSHIRE HATHAWAY INC DEL$1.77 B
  LARGER REPORTED AMOUNT3,531,700 shCALL is the filed contract type.
• CALLDELL DELL TECHNOLOGIES INC$1.63 B
  LARGER REPORTED AMOUNT3,781,800 shCALL is the filed contract type.
• PUTVANGUARD INDEX FDS$1.44 B
  LARGER REPORTED AMOUNT2,102,200 shPUT is the filed contract type.
• PUTBRK-B BERKSHIRE HATHAWAY INC DEL$987.3 M
  LARGER REPORTED AMOUNT1,973,000 shPUT is the filed contract type.
• CALLVANGUARD INDEX FDS$644.0 M
  SMALLER REPORTED AMOUNT937,700 shCALL is the filed contract type.
• CALLHD HOME DEPOT INC$580.5 M
  LARGER REPORTED AMOUNT1,645,900 shCALL is the filed contract type.
• PUTHD HOME DEPOT INC$483.2 M
  LARGER REPORTED AMOUNT1,370,000 shPUT is the filed contract type.

493 more option comparison rows in this filing.