From the link:
Besides the solid gains in these leveraged ETFs (see percentage change column on the chart below), 42 of the stocks in my nifty-50 stock list were in the red. That was mass selling, a veritable blood bath on the day. SPY puts in or at or near the money on the open, expiring today, were up a minimum of 93% from today’s open (the 279 put was up 243%, showing there is nothing “slow” about a rollover on an expiration day).
For more and charts: