hmm, I think you completely misinterpreted my posts. I do not buy puts or calls. I write them; I think the few exchanges I had with jdassoc back in September and October should have made that clear. Anyhow, I did not open 100K Oct20 Puts. The entire open interest of Oct20 Puts was around 120K on 10/8 and early 10/9. That open interest jumped to around 220K on the morning of 10/10. (how big of a market maker do you take me to be? That big jump in open interest was why I turned bullish. I posted on 10/10 11:13AM "100K QQQ OCT20 Puts opened in the last couple days!" It was supposed to be a warning to bears. Then the next time I posted, it was 10/11 10:12AM, "Massive amount of QQQ Oct20Puts and Oct21Puts merged in the last 25 hours, we probably had our low before expiry, if not for the year." I think it should be quite clear which side of the tape I was on. I should point out, up through 10/9 I was quite bearish (e.g. http://www.investorshub.com/boards/read_msg.asp?message_id=527320); however the emergence of large quantities of puts on late 10/9 and early 10/10 changed the condition completely. BTW, I doubt anyone holding half the open interest would be posting on this board.
Since you asked for those posts where I expressed disagreement with the Turnips shortly after the October rally launched itself, here is but a couple examples among many posts where I argued against the bearish view of that time:
10/11 12:42pm http://www.investorshub.com/boards/read_msg.asp?message_id=533027 "IMHO, shorts are taking unnecessary risks here. Let the trend develop in your favor; what's the fun jumping in front of a freight train. The fact that Zeev set cash position to 45% last night after such a major reversal day should be indicative that the bulls have a heathy respect for risk, therefore the market still has room to run."
10/18 4:00pm http://www.investorshub.com/boards/read_msg.asp?message_id=545198 "This predictaion makes no sense, IMHO. After an option expiration as strong as today's, there usually is follow-thru for a at least for a few days." BTW, I'm not sure about your turning entirely bullish on 10/16, since as late as 10/18 you were still talking about "going down," which elicited my response.
The date 10/14 was what jumped into my mind because I had to be away for Columbus Weekend and unable to trade on 10/14. It should have been late 10/11, at the beginning of the weekend, not the end. But anyhow, as you can see, we had a running disagreement through the entire following week and then some.