U.S. Equities Market Volume Summary

Notional Value Summary
Volume Summary

Matched Volume	Tape A	Tape B	Tape C	Market^*	Today	5 Day

NYSE (P,N,A,C)	900,275,734	257,339,603	154,346,054	1,311,961,391	22.41%	22.39%
Cboe (Z,Y,K,J)	546,964,442	244,762,019	326,560,303	1,118,286,764	19.10%	18.02%
NASDAQ (B,X,Q)	416,224,098	169,288,271	483,206,144	1,068,718,513	18.26%	18.26%
IEX (V)	84,305,854	13,689,287	37,938,859	135,934,000	2.32%	2.40%
CHX (M)	21,500,975	9,190,536	9,863,047	40,554,558	0.69%	0.59%
Matched Total	1,969,271,103	694,269,716	1,011,914,407	3,675,455,226	62.79%	61.66%

FINRA &TRF Volume
TRFs (DQ,DN)	1,045,995,436	372,058,403	760,043,780	2,178,097,619	37.21%	38.34%
NASD & TRF Total	1,045,995,436	372,058,403	760,043,780	2,178,097,619	37.21%	38.34%

Total Consolidated Volume
Total	3,015,266,539	1,066,328,119	1,771,958,187	5,853,552,845	100%	100%

Data as of 23:59 25/05/2018.

If using this data in a published report, please cite Cboe Global Markets as the source.

This data display automatically refreshes every minute during trading hours.

"Notional Value", which is also referred to as "Dollar Value Traded", is calculated by multiplying the execution price of each transaction by the total number of shares executed in each transaction. This method of calculating market share, as opposed to simply using the total number of shares that traded hands, can be a better representation of the actual "size" of a market. The larger the Notional Value traded, the more risk that actually changed hands. By way of example, 100 shares of stock ABC at $362 per share is a much larger transaction than 100 shares of stock XYZ at $2.20 a share. Other assets classes, such as futures and options, and most other equity markets outside of the U.S., historically have used Notional Value as an index into how much activity takes place on those markets. Cboe is the first to offer a real-time view, market-wide, into Notional Value traded in the U.S. cash equity markets.