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.

• CALLINTERNATIONAL BUSINESS MACHS$901.2 M
  LARGER REPORTED AMOUNT3,204,600 shCALL is the filed contract type.
• PUTINTERNATIONAL BUSINESS MACHS$816.6 M
  LARGER REPORTED AMOUNT2,904,000 shPUT is the filed contract type.
• CALLREGN REGENERON PHARMACEUTICALS$169.2 M
  LARGER REPORTED AMOUNT271,300 shCALL is the filed contract type.
• PUTREGN REGENERON PHARMACEUTICALS$165.0 M
  LARGER REPORTED AMOUNT264,600 shPUT is the filed contract type.
• CALLVERTEX PHARMACEUTICALS INC$121.5 M
  LARGER REPORTED AMOUNT244,600 shCALL is the filed contract type.
• CALLTEVA PHARMACEUTICAL INDS LTD$95.6 M
  LARGER REPORTED AMOUNT2,822,000 shCALL is the filed contract type.
• PUTVERTEX PHARMACEUTICALS INC$66.9 M
  LARGER REPORTED AMOUNT134,600 shPUT is the filed contract type.
• CALLMACOM TECH SOLUTIONS HLDGS I$64.7 M
  LARGER REPORTED AMOUNT170,000 shCALL is the filed contract type.
• PUTMDGL MADRIGAL PHARMACEUTICALS INC$50.5 M
  LARGER REPORTED AMOUNT94,000 shPUT is the filed contract type.
• CALLMDGL MADRIGAL PHARMACEUTICALS INC$46.7 M
  SMALLER REPORTED AMOUNT86,900 shCALL is the filed contract type.

137 more option comparison rows in this filing.