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.

• PUTTAIWAN SEMICONDUCTOR MANUFAC$4.65 B
  LARGER REPORTED AMOUNT9,735,500 shPUT is the filed contract type.
• CALLTAIWAN SEMICONDUCTOR MANUFAC$3.73 B
  LARGER REPORTED AMOUNT7,817,500 shCALL is the filed contract type.
• PUTWDC WESTERN DIGITAL CORP$3.69 B
  LARGER REPORTED AMOUNT5,777,700 shPUT is the filed contract type.
• CALLSTATE STR SPDR DOW JONES IND$2.15 B
  LARGER REPORTED AMOUNT4,118,000 shCALL is the filed contract type.
• PUTCROWDSTRIKE HLDGS INC$2.10 B
  LARGER REPORTED AMOUNT2,746,100 shPUT is the filed contract type.
• CALLCROWDSTRIKE HLDGS INC$2.00 B
  SMALLER REPORTED AMOUNT2,615,000 shCALL 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.
• CALLWDC WESTERN DIGITAL CORP$1.48 B
  LARGER REPORTED AMOUNT2,323,700 shCALL is the filed contract type.
• CALLCOSTCO WHOLESALE CORPORATION$1.48 B
  LARGER REPORTED AMOUNT1,581,700 shCALL is the filed contract type.
• PUTCOSTCO WHOLESALE CORPORATION$1.45 B
  LARGER REPORTED AMOUNT1,549,600 shPUT is the filed contract type.

784 more option comparison rows in this filing.