Just started reading your journal. Institutional risk-arb traders rarely sell vol as the average IV-drop is roughly 20% in the targets (GS-data). It gets worse from there. One of GS' favorite trades during the late-Rubin era was to double the OI in short vola on the day the deal was made public (or before!).
Vols get crushed that it's is great time to buy 90D calls on targets as a proxy for the shares.
i rarely use options to trade risk-arb as i m not well versed in options... would value your opinions in how to use options in risk arb... so you are suggesting that when merger deals were made public, the volatility usually get crushed and its a good time to buy to 90 days call options?