no. only that he claims he started buying after the 20% selloff. but in fairness to the OP, it doesn't mean he didn't have shares before. It also doesn't mean he wasn't selling after he made the statement.
Pershing Square was down 13.8 first three weeks in January. Then it rebounded about 5.6% over the last week in Jan-2022. NFLX ended at $430 on 1/31/2022. That certainly helped his 5.6% recovery. But his NFLX position is down again in Feb-2022. Not sure his average price for the NFLX position. When Ackman twitted, NFLX was in the $370 range. Just not impressed by his dip buying, along with Cathie Wood. They are more hypes than real performance.