As of Jan 31, 2018 LJM had the following Put positions:
- short Puts from 2,160 - 2,680 (~46 mill)
- long Puts from 2,665 - 2,805 (~22 mill)
(https://www.sec.gov/Archives/edgar/data/1552947/000158064218001814/ljmnq.htm)
So it appears they were hedging with a classic 2:1 ratio put spread. But...