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CBOE's Average Daily Volume In May Rises 16% - 4.1 Million Contracts Per Day, Total Volume Of 85.6 Million During May - Trading In Equity Options Gains 12% Over Year Ago

Date 02/06/2008

The Chicago Board Options Exchange (CBOE) today announced that average daily trading volume in May totaled 4,076,999 contracts per day, up 16 percent when compared to 3,528,081 contracts per day during May 2007.Total exchange volume during May rose ten percent to 85,616,975 contracts, up from May 2007 volume of 77,617,777 contracts.

Total contracts traded at CBOE year-to-date through May 2008 were up 29 percent to 454,457,564 contracts from 351,629,603 contracts one year ago.

During May, trading volume in equity options totaled 48,646,266 contracts, surpassing 43,496,845 contracts traded in May 2007 by 12 percent.Average daily volume in equity options for the month was 2,316,489 contracts traded per day, an increase of 17 percent over the 1,977,129 contracts per day during May 2007.




May 2008
Volume
(21 days)
% Change vs May 2007
(22 days)
% Change vs. April 2008
(22 days)
Year-To-Date Volume
(104 days)
% Change
vs. 2007
(103 days)
Industry Total
266,870,046
+16%
-5%
1,432,175,576
+23%
CBOE Total
85,616,975
+10%
-1%
454,457,564
+29%
CBOE Total ADV
4,076,999
+16%
+4%
4,369,784
+28%
Equity
48,646,266
+12%
+1%
238,825,937
+22%
Equity ADV
2,316,489
+17%
+5%
2,296,403
+21%
Cash-Settled Index
17,126,985
-9%
-4%
94,934,882
+10%
Cash-Settled Index ADV
815,571
-5%
0%
912,835
+8%
ETF Options
19,843,588
+30%
-1%
120,695,016
+73%
ETF Options ADV
944,933
+36%
+4%
1,160,529
+72%
Exchange Open Interest
267,421,977
+10%
+8%
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CBOE's May Market Share at 32.1 Percent Leads Industry

In May, CBOE's market share of total industry volume was 32.1 percent, up 1.5 percentage points from April 2008.Year to date, CBOE's total market share is 31.7 percent.In equity options, CBOE's May market share was 26.5 percent, up 1.3 percent from the previous month.Index and ETF market share was 34.4 percent in May, up 3.1 percentage points from last month.



CBOE Market Share
May 2008 Market Share
% Change vs
May 2007
% Change vs
April 2008
Year-To-Date Market Share
% Changevs 2007
Exchange
32.1%
-1.8%
+1.5%
31.7%
-2.3%
Equity
26.5%
0%
+1.3%
25.6%
-0.5%
Index & ETF
(Multiple listings only)
34.4%
-3.9%
-3.1%
34.0%
(Last 12 months)
-6.3%





May Highlights: Volume in SPY Rises 97%; VIX Options Up 24%, CBOE Signs Agreement with 3D for Options Block Trading/Pricing Methodology


- The top five most actively traded equity options during May were Yahoo (YHOO), Apple (AAPL) Citigroup, Inc. (C), General Electric (GE) and Research in Motion (RIMM).

- The top five most-actively traded index and ETF options at CBOE during May were S&P 500 Index (SPX), Standard & Poor's Depositary Receipts (SPY), iShares Russell 2000 Index Fund (IWM), PowerShares QQQ Trust (QQQQ), and the CBOE Volatility Index (VIX).

- Total volume for the month in SPY options was 5,659,474 contracts, up 97 percent over May 2007 volume of 2,865,882 contracts.Average daily volume was 269,499 contracts in May 2008, up 107 percent as compared to the 130,267 contracts per day a year ago.

- On May 20, CBOE announced it had signed an agreement with 3D Markets, Inc., a block options crossing network.The exclusive agreement, when approved by the Securities and Exchange Commission, will allow CBOE to match large institutional buy and sell options orders electronically during a special matching session; the execution price subsequently will be determined at the end of the trading day, using a methodology known as "GWAPTM" pricing (Gamma Weighted Average Price), similar to Value Weighted Average Price (VWAP) used extensively in the securities market. Under the agreement, the CBOE will provide the regulatory framework necessary for option benchmark trades. The GWAP (Gamma Weighted Average Price) auction and pricing methodologies will be proprietary to CBOE.

- During May, nine CBOE memberships, or seats, changed hands.For the month, the highest seat price was $2,850,000 on May 14 and May 28, 2008.For the year, a total of 69 CBOE seats have been traded, with the high being $3,125,000 on January 2, 2008.

- Volume at the CBOE Futures Exchange (CFE) totaled 119,271 contracts traded during May, an increase of 47 percent over May 2007 volume of 81,006 contracts.Average daily volume was 5,679 contracts.Monthly volume in VIX futures totaled 113,407 contracts traded, up 44 percent over the May 2008 volume of 78,716 contracts.

- At the CBOE Stock Exchange (CBSX), May trading volume totaled 201.7 million shares traded, up 478% over May 2007 volume of 34.9 million shares.May average daily volume at CBSX was 9.6 million shares, and a total of 274,915 trades were executed during the month.



CBOE Individual Index and ETF Volume Figures For May 2008


Symbol
Product
Total
Volume
% Change vs May 07
% Change vs April 08
OpenInterest
% Change vs 2007
SPX

S&P 500 Index
11,350,116
-15%
-7%
11,941,269
+12%
VIX
CBOE Volatility Index
(options)
1,940,083
+24%
-3%
1,042,050
-25%
SPY
Standard & Poor's Depositary Receipts (SPDRs)
5,659,474
+97%
+3%
10,111,818
+51%
XSP
Mini-S&P 500 Index

294,347
+300%
+20%
414,413
-54%
OEX

S&P 100 Index
(American-Style Exercise)
794,979
-36%
-6%
253,433
-27%
XEO

S&P 100 Index
(European-Style Exercise)
175,381
-4%
-18%
134,870
+47%
DJX

Dow Jones Industrial Average
450,156
-42%
-11%
733,018
-18%
DIA

DIAMONDS Trust, Series 1
560,774
-29%
-12%
1,295,954
-10%
NDX

Nasdaq-100 Index
448,751
-39%
+4%
496,561
-31%
MNX

CBOE Mini-NDX Index
(based on Nasdaq-100)
318,480
+4%
0%
1,591,755
-20%
VXN
CBOE Nasdaq-100 Volatility Index (options)
451
-----
+205%
385
-----
QQQQ

PowerShares QQQ Trust
3,418,856
+5%
-6%
6,650,442
-24%
RUT
Russell 2000 Index

1,202,714
+152%
+14%
1,852,296
+28%
RVX

CBOE Russell 2000 Volatility Index (options)
6,094
-----
-18%
4,636
-----
IWM

iShares Russell 2000
Index Fund
4,998,123
-17%
+9%
7,059,165
-6%
SMH

Semiconductor HOLDRs Trust
67,948
-35%
-43%
621,989
-38%
OIH

Oil Services HOLDRs Trust
256,197
-22%
-8%
488,616
-45%
EEM
iShares MSCI Emerging Markets Index
731,087
+53%
-7%
1,988,364
+114%
XLF
Financial Select SPDR

1,393,188
+509%
-25%
6,322,969
+251%
XLE

Energy Select SPDR
819,397
+178%
+21%
2,438,960
+56%
FXI
iShares FTSE/Xinhua China Index Fund
76,126
-33%
-28%
376,672
+82%


CBOE, the largest options marketplace in the U.S. and the creator of listed options, is regulated by the Securities and Exchange Commission (SEC).For additional information about the CBOE and its products, access the CBOE website at: www.cboe.com/.