All OTC Securities 
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2020 | 4 | 1,124,711 | 902,961,749 | 803 |
| 2020 | 3 | 1,306,881 | 1,448,379,417 | 1,108 |
| 2020 | 2 | 1,557,525 | 1,628,857,153 | 1,046 |
| 2020 | 1 | 1,585,471 | 2,098,825,135 | 1,324 |
| 2019 | 4 | 943,661 | 2,698,500,160 | 2,860 |
| 2019 | 3 | 1,219,573 | 5,718,774,248 | 4,689 |
| 2019 | 2 | 1,066,211 | 3,622,102,205 | 3,397 |
| 2019 | 1 | 904,658 | 3,869,021,224 | 4,277 |
| 2018 | 4 | 1,259,931 | 4,027,376,605 | 3,197 |
| 2018 | 3 | 779,409 | 3,508,668,649 | 4,502 |
| 2018 | 2 | 823,275 | 5,687,249,480 | 6,908 |
| 2018 | 1 | 1,006,893 | 9,169,340,824 | 9,107 |
| 2017 | 4 | 738,718 | 3,863,193,081 | 5,230 |
| 2017 | 3 | 487,676 | 815,070,853 | 1,671 |
| 2017 | 2 | 521,633 | 632,166,737 | 1,212 |
| 2017 | 1 | 596,679 | 818,672,655 | 1,372 |
| 2016 | 4 | 651,082 | 673,595,552 | 1,035 |
| 2016 | 3 | 443,934 | 418,007,773 | 942 |
| 2016 | 2 | 481,007 | 556,431,166 | 1,157 |
| 2016 | 1 | 418,341 | 324,954,407 | 777 |
| 2015 | 4 | 176,692 | 113,259,361 | 641 |
| 2015 | 3 | 181,372 | 110,972,490 | 612 |
| 2015 | 2 | 162,505 | 136,770,209 | 842 |
| 2015 | 1 | 174,835 | 158,361,125 | 906 |
| 2014 | 4 | 163,944 | 190,676,326 | 1,163 |
| 2014 | 3 | 120,302 | 116,250,155 | 966 |
| 2014 | 2 | 90,392 | 124,636,153 | 1,379 |
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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