ThirteenFOptionHolding

message ThirteenFOptionHolding {
  Ticker ticker = 1;
  optional OptionType option_type = 2;
  optional int64 units = 3;
  optional int64 units_changed = 4;
  optional Decimal reported_value = 5;
  Date open_interest_date = 6;
  optional Decimal percent_of_total_oi = 7;
  optional Decimal percent_of_side_oi = 8;
  optional int64 total_open_interest = 9;
  optional int64 side_open_interest = 10;
}