Ceased in April, 2021
Tier 1 Securities 
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2017 | 1 | 1 | 11,700 | 11,700 |
| 2016 | 4 | 1 | 5,000 | 5,000 |
Tier 2 Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2017 | 3 | 1 | 19,000 | 19,000 |
| 2017 | 1 | 1 | 24,600 | 24,600 |
| 2016 | 3 | 2 | 23,400 | 11,700 |
NMS Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2017 | 3 | 1 | 19,000 | 19,000 |
| 2017 | 1 | 2 | 36,300 | 18,150 |
| 2016 | 4 | 1 | 5,000 | 5,000 |
| 2016 | 3 | 2 | 23,400 | 11,700 |
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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