CBOE: Market Data - Intra-Day Volume

(*All times are Central)

Half Hourly Exchange Volume Report For 11/20/2008

*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	123511	146632	270143	128353	281549	409902	0	4	4	251864	428185	680049	1.70
9:30 AM	279673	370175	649848	287973	592733	880706	0	4	4	567646	962912	1530558	1.70
10:00 AM	431931	518996	950927	423909	875761	1299670	0	4	4	855840	1394761	2250601	1.63
10:30 AM	554131	624644	1178775	546663	1033550	1580213	0	4	4	1100794	1658198	2758992	1.51
11:00 AM	634040	715579	1349619	624175	1210384	1834559	0	4	4	1258215	1925967	3184182	1.53
11:30 AM	761251	819203	1580454	698119	1311291	2009410	0	5	5	1459370	2130499	3589869	1.46
12:00 PM	879636	910937	1790573	865664	1433428	2299092	0	5	5	1745300	2344370	4089670	1.34
12:30 PM	975041	999668	1974709	936815	1511810	2448625	0	5	5	1911856	2511483	4423339	1.31
1:00 PM	1036504	1054306	2090810	1034425	1639072	2673497	0	5	5	2070929	2693383	4764312	1.30
1:30 PM	1108038	1116053	2224091	1093206	1739407	2832613	0	5	5	2201244	2855465	5056709	1.30
2:00 PM	1192443	1202137	2394580	1186529	1861110	3047639	0	5	5	2378972	3063252	5442224	1.29
2:30 PM	1306632	1314575	2621207	1280062	2039939	3320001	0	5	5	2586694	3354519	5941213	1.30
3:00 PM	1481589	1532850	3014439	1446635	2350860	3797495	0	5	5	2928224	3883715	6811939	1.33

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 11/20/2008

	DOW Industrials			S&P 100			S&P 500
Time	Calls	Puts	Total	Calls	Puts	Total	Calls	Puts	Total
9:00 AM	1686	8153	9839	2701	3645	6346	50405	78211	128616
9:30 AM	6750	15459	22209	5782	6086	11868	83213	176226	259439
10:00 AM	8121	17720	25841	10690	10694	21384	124280	271526	395806
10:30 AM	10941	21967	32908	12914	12533	25447	186875	333762	520637
11:00 AM	12082	22744	34826	13840	13045	26885	224139	400117	624256
11:30 AM	12911	23221	36132	14513	14180	28693	251132	445296	696428
12:00 PM	13882	24241	38123	15878	15900	31778	275707	480529	756236
12:30 PM	16071	27497	43568	16713	16439	33152	300474	505279	805753
1:00 PM	16741	28551	45292	20063	18423	38486	328530	545912	874442
1:30 PM	16405	35200	51605	21550	20084	41634	347769	582999	930768
2:00 PM	16571	35883	52454	23155	21251	44406	372147	626441	998588
2:30 PM	16692	36574	53266	24476	22600	47076	392640	672536	1065176
3:00 PM	19291	44818	64109	28708	29198	57906	444636	767395	1212031

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 11/19/2008)

CBOE Total Open Interest

Call 178986108

Put 144145564

Total 323131672

CBOE Index Interest on 11/19/2008

Option Calls Puts Total
OEX 147994 97524 245518
SPX 7836409 10316023 18152432
NDX 289519 356582 646101
MNX 633240 781180 1414420
DJX 470653 427376 898029
DTX 0 0 0

Option Calls Puts Total
DUX 0 0 0
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