All OTC Securities 
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2014 | 3 | 1 | 2,250 | 2,250 |
Tier 1 Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 272,288 | 59,450,387 | 218 |
| 2014 | 4 | 657,359 | 152,406,335 | 232 |
| 2014 | 3 | 651,224 | 161,983,204 | 249 |
| 2014 | 2 | 309,009 | 81,810,765 | 265 |
Tier 2 Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 113,552 | 24,653,180 | 217 |
| 2014 | 4 | 349,384 | 84,429,599 | 242 |
| 2014 | 3 | 364,401 | 79,658,819 | 219 |
| 2014 | 2 | 158,273 | 33,448,178 | 211 |
NMS Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2015 | 1 | 385,840 | 84,103,567 | 218 |
| 2014 | 4 | 1,006,743 | 236,835,934 | 235 |
| 2014 | 3 | 1,015,625 | 241,642,023 | 238 |
| 2014 | 2 | 467,282 | 115,258,943 | 247 |
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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