CBOE: Market Data - Intra-Day Volume

(*All times are Central)

Half Hourly Exchange Volume Report For 5/14/2008

*Your use of CBOE Intra-Day Volume data is subject to the Terms and Conditions of the CBOE Website.

Please note: As of 01/26/2005, all reported volume on Options on the Nasdaq 100 Index Tracking Stock (QQQ), including LEAPS, will be reflected within the "Index" 1/2 Hourly Volume column immediately below rather than within the "Equity" 1/2 Hourly Volume column immediately below.

	Equity Options			Index Options			Interest Rate Options			Total			Put / Call
Time	Calls	Puts	Total	Calls	Puts	Total	Calls	Puts	Total	Calls	Puts	Total	Ratio
9:00 AM	254328	136298	390626	146703	143505	290208	0	0	0	401031	279803	680834	0.70
9:30 AM	410524	236703	647227	327701	304860	632561	0	0	0	738225	541563	1279788	0.73
10:00 AM	605043	322799	927842	444682	415538	860220	0	0	0	1049725	738337	1788062	0.70
10:30 AM	725427	403712	1129139	522991	522510	1045501	0	0	0	1248418	926222	2174640	0.74
11:00 AM	803571	460047	1263618	594043	593222	1187265	0	0	0	1397614	1053269	2450883	0.75
11:30 AM	936423	527043	1463466	645471	642083	1287554	0	0	0	1581894	1169126	2751020	0.74
12:00 PM	999529	576219	1575748	702868	699834	1402702	0	0	0	1702397	1276053	2978450	0.75
12:30 PM	1082142	618019	1700161	759032	747691	1506723	0	0	0	1841174	1365710	3206884	0.74
1:00 PM	1166326	665790	1832116	805604	843194	1648798	0	0	0	1971930	1508984	3480914	0.77
1:30 PM	1247801	715982	1963783	881179	906756	1787935	0	0	0	2128980	1622738	3751718	0.76
2:00 PM	1365612	824591	2190203	960745	989170	1949915	0	0	0	2326357	1813761	4140118	0.78
2:30 PM	1488582	911574	2400156	1066579	1096404	2162983	0	0	0	2555161	2007978	4563139	0.79
3:00 PM	1645461	1031568	2677029	1136755	1209601	2346356	0	0	0	2782216	2241169	5023385	0.81

Final Volume and Open Interest information can be found here.
* Fields with N/A indicate that the data is not available.

Half Hourly Volume Report for Selected Indices For 5/14/2008

	DOW Industrials			S&P 100			S&P 500
Time	Calls	Puts	Total	Calls	Puts	Total	Calls	Puts	Total
9:00 AM	860	2730	3590	4270	3431	7701	56062	46402	102464
9:30 AM	5097	7476	12573	7299	5661	12960	114273	115545	229818
10:00 AM	7798	7749	15547	9993	10559	20552	166545	178162	344707
10:30 AM	21245	7889	29134	11418	12205	23623	199247	206894	406141
11:00 AM	22207	8396	30603	14698	18009	32707	233794	248650	482444
11:30 AM	22886	8961	31847	17643	18651	36294	243377	269043	512420
12:00 PM	24894	9064	33958	19562	19247	38809	269069	297638	566707
12:30 PM	25007	9082	34089	23413	22756	46169	298139	310868	609007
1:00 PM	25107	19170	44277	24235	24996	49231	327629	355684	683313
1:30 PM	25352	19307	44659	25620	26595	52215	340192	371951	712143
2:00 PM	25638	19556	45194	26311	29425	55736	371384	429134	800518
2:30 PM	25728	19647	45375	28072	31499	59571	402783	451220	854003
3:00 PM	27353	22590	49943	31248	36333	67581	419010	489444	908454

Final Volume and Open Interest information can be found here.
* Fields with N/A indicate that the data is not available.

Daily Open Interest (as-of-close on 5/13/2008)

CBOE Total Open Interest

Call 143424629

Put 134467830

Total 277892459

CBOE Index Interest on 5/13/2008

Option Calls Puts Total
OEX 132717 157758 290475
SPX 3933728 6794421 10728149
NDX 231439 299836 531275
MNX 563739 713009 1276748
DJX 326697 284046 610743
DTX 0 2 2

Option Calls Puts Total
DUX 0 1 1
OEX post exp N/A N/A N/A
SPX post exp N/A N/A N/A
NDX post exp N/A N/A N/A
MNX post exp N/A N/A N/A
DJX post exp N/A N/A N/A