Subject: File No. SR-CBOE-2011-100
From: Ron March

December 12, 2011

These are the closing prices on Friday December 9:

The SPX dropped to 1254.96 at 3:00
1254.96 3:00
1254.99
1255.05
1255.07
1255.11 3:01
1255.12
1255.14
1255.15 3:02
1255.16
1255.17
1255.18
1255.19 3:03

So after the initial drop, the SPX then gained 24 cents. No option could be traded after 3:00.

There is NO logical reason to continue this PILOT program with a 3:00 halt to trading.

Why are they allowed to trade until 3:15 on every other day but Friday?

Once again, I will point out that ther is REAL risk to the CUSTOMER.

Ron March