Event Dates

Date Event Type Event
26 Apr 1973 S CBOE first day of trading, CBOE Clearing Corp. opens
26 Apr 1973 S OCC formed
16 Oct 1974 S CBOE creates Options Price Reporting Authority (OPRA)
02 Dec 1974 S CBOE opens new $2.5 million trading floor
03 Jan 1975 S CBOE Clearing Corp. sold to OCC
03 Jan 1975 S AMEX begins trading options
19 May 1975 S CBOE launches computerized price reporting system
23 Jun 1975 S PHLX begins trading options (then known as PBW)
01 Apr 1976 S PCX launches options trading floor
14 Jan 1976 S CBOE and AMEX begin dual listings of options
01 May 1977 S Department of Trading Regulation formed
03 Jun 1977 S Put options introduced
30 Jun 1977 S Montreal Exchange begins trading options
15 Jan 1979 O Chicago Blizzard - CBOE Closed
17 Jan 1979 S OSS direct order routing becomes operational
02 Jun 1980 S CBOE merges with Midwest Stock Exchange
11 Mar 1983 S CBOE creates and launches first index options - OEX
01 Jul 1983 S CBOE launches S&P 500 index opens
21 Feb 1984 S CBOE moves into present facility
01 Feb 1985 S RAES launched
Apr 1985 S CBOE Options Institute started
01 May 1987 S Modified Trading System (DPM's)
19 Oct 1987 S DOW experienced 22.61% drop
16 Jan 1989 S CTM 1.0 launched
07 Feb 1989 S Ebook
23 Jul 1989 S Interest rate options introduced
13 Oct 1989 S Mini Market Crash
17 Oct 1989 S San Francisco Earthquake PCX temporarily moves to CBOE floor
18 Oct 1989 S San Francisco Earthquake PCX temporarily moves to CBOE floor
19 Oct 1989 S San Francisco Earthquake PCX temporarily moves to CBOE floor
20 Oct 1989 S San Francisco Earthquake PCX temporarily moves to CBOE floor
05 Oct 1990 S CBOE creates LEAPS
13 Apr 1992 O Chicago Flood
01 Apr 1993 S CBOE announces VIX
26 Feb 1993 S CBOE createsFlex Options
28 Apr 1997 S CBOE buys NYSE options business, moves to CBOE Green Room
06 Oct 1997 S CBOE LaunchesDJX options
27 Oct 1997 S DOW plummets, NYSE closes at 3:30 EST
02 Oct 1999 S ROS implemented
26 May 2000 S ISE begins trading options
29 Jan 2001 S Transfer from fraction to decimal
02 Feb 2001 S CBOE Announces VXN
11 Sep 2001 O September 11 Attack in New York - Market Closed
12 Sep 2001 O September 11 Attack in New York - Market Closed
13 Sep 2001 O September 11 Attack in New York - Market Closed
14 Sep 2001 O September 11 Attack in New York - Market Closed
26 Oct 2001 S CBOEDirect launched for pre-opening trading
11 Apr 2002 S CBOE BXM introduced
30 Jul 2002 S Sarbanes Oxley Act implemented
12 Jun 2003 S CBOE Hybrid Launched
06 Feb 2004 S BOX begins trading options
11 Jun 2004 O President Reagans Funeral - Exchanges Closed

* Event Type "S" indicates a significant event that could affect or explain changes in the data. "O" indicates days where the exchange was closed due to special circumstances.