Ceased in 2015
See also: FINRA Broker Check
SEC Press Release
SEC Litigation
Tier 1 Securities 
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 2,732,943 | 628,115,754 | 230 |
| 2014 | 4 | 11,955,663 | 2,358,942,267 | 197 |
| 2014 | 3 | 10,327,526 | 1,897,221,053 | 184 |
| 2014 | 2 | 5,251,261 | 944,126,448 | 180 |
Tier 2 Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 1,829,304 | 610,063,732 | 333 |
| 2014 | 4 | 7,721,800 | 2,160,957,237 | 280 |
| 2014 | 3 | 6,840,213 | 1,666,271,590 | 244 |
| 2014 | 2 | 3,777,258 | 932,391,017 | 247 |
NMS Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 4,562,247 | 1,238,179,486 | 271 |
| 2014 | 4 | 19,677,463 | 4,519,899,504 | 230 |
| 2014 | 3 | 17,167,739 | 3,563,492,643 | 208 |
| 2014 | 2 | 9,028,519 | 1,876,517,465 | 208 |
Original Source of Information: FINRA ATS Transparency Data Quarterly Statistics
ATS data has been aggregated on a quarterly basis to display total shares, total trades and average trade size per ATS.
Tier 1 comprises all securities in the S&P 500, the Russell 1000 and select Exchange Traded Products (ETPs). Tier 2 comprises all other NMS securities, except for rights and warrants, which are specifically excluded from coverage. The LULD Plan applies during regular trading hours of 9:30 am ET – 4:00 pm ET, excepting opening, reopening, and closing transactions on the primary listing exchanges.
See Limitup-limit-down for a more detailed explanation of these categories.
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