0kj-187A-2018-04-10

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131
NOTE: BROKER-DEALERS ARE REQUIRED TO DISCLOSE ANY MATERIAL ARRANGEMENTS WITH THE VENUES
LISTED IN EACH SECTION BELOW, INCLUDING, BUT NOT LIMITED TO, ANY INTERNALIZATION

OR PAYMENT FOR ORDER FLOW ARRANGEMENTS

SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018

SECURITIES LISTED ON THE NEW YORK STOCK EXCHANGE
SUMMARY STATISTICS :
NON-DIRECTED ORDERS AS PERCENTAGE OF TOTAL CUSTOMER ORDERS 100.00%
MARKET ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 74.66%
LIMIT ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 21.61%

OTHER ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 3.73%
VENUES RECEIVING SIGNIFICANT PERCENTAGE OF TOTAL NON-DIRECTED ORDERS :
1. Citadel Securities LLC 42.44%
2. VIRTU Americas LLC 34.16%
3. National Financial Services LLC 7.44%
4. Two Sigma Securities, LLC 3.08%
5. G1 Execution Services, LLC 2.43%
6. Cboe EDGX U.S. Equities Exchange 1.80%
7. NASDAQ Execution Services, LLC 1.59%
8. Cboe BYX U.S. Equities Exchange 1.56%
9. UBS Securities, LLC 1.24%
10. Instinet LLC 1.08%
INFORMATION CONCERNING SIGNIFICANT VENUES :
1. Citadel Securities LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 39.54%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 53.46%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 36.60%
2. VIRTU Americas LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 38.54%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 22.06%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 16.60%
3. National Financial Services LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 9.28%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 1.03%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 7.66%
4. Two Sigma Securities, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 3.87%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.88%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131
SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018
5. G1 Execution Services, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 3.02%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.81%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
6. Cboe EDGX U.S. Equities Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.00%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 8.31%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
7. NASDAQ Execution Services, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.00%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 7.13%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 1.28%
8. Cboe BYX U.S. Equities Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 2.02%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.07%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.85%
9. UBS Securities, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.53%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 2.94%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 5.53%
10. Instinet LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 1.40%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.07%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.43%

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131

SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018

SECURITIES LISTED ON THE NASDAQ STOCK MARKET
SUMMARY STATISTICS :
NON-DIRECTED ORDERS AS PERCENTAGE OF TOTAL CUSTOMER ORDERS 100.00%
MARKET ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 73.27%
LIMIT ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 22.81%

OTHER ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 3.92%
VENUES RECEIVING SIGNIFICANT PERCENTAGE OF TOTAL NON-DIRECTED ORDERS :
1. VIRTU Americas LLC 40.12%
2. Citadel Securities LLC 36.75%
3. National Financial Services LLC 5.85%
4. Cboe EDGX U.S. Equities Exchange 4.77%
5. Two Sigma Securities, LLC 2.98%
6. G1 Execution Services, LLC 2.24%
7. NASDAQ Execution Services, LLC 2.24%
8. Cboe BYX U.S. Equities Exchange 1.59%
9. UBS Securities, LLC 0.94%
10. Instinet LLC 0.68%
INFORMATION CONCERNING SIGNIFICANT VENUES :
1. VIRTU Americas LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 41.17%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 40.55%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 18.12%
2. Citadel Securities LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 40.32%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 22.89%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 50.72%
3. National Financial Services LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 7.47%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 1.00%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 3.62%
4. Cboe EDGX U.S. Equities Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.00%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 20.77%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.72%



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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131
SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018
  5. Two Sigma Securities, LLC
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   3.87%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   0.62%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
  6. G1 Execution Services, LLC
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   2.79%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   0.75%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.72%
  7. NASDAQ Execution Services, LLC
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   0.00%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   9.45%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   2.17%
  8. Cboe BYX U.S. Equities Exchange
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   2.17%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   0.00%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
  9. UBS Securities, LLC
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   0.43%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   2.36%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   2.17%
 10. Instinet LLC
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   0.93%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   0.00%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131

SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018

SECURITIES LISTED ON THE NYSE MKT LLC OR REGIONAL EXCHANGES
SUMMARY STATISTICS :
NON-DIRECTED ORDERS AS PERCENTAGE OF TOTAL CUSTOMER ORDERS 100.00%
MARKET ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 85.29%
LIMIT ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 13.82%

OTHER ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 0.89%
VENUES RECEIVING SIGNIFICANT PERCENTAGE OF TOTAL NON-DIRECTED ORDERS :
1. Citadel Securities LLC 45.64%
2. VIRTU Americas LLC 37.30%
3. Two Sigma Securities, LLC 4.17%
4. G1 Execution Services, LLC 2.95%
5. Cboe BYX U.S. Equities Exchange 2.58%
6. Instinet LLC 2.30%
7. National Financial Services LLC 1.73%
8. NASDAQ Execution Services, LLC 0.89%
9. Cboe EDGX U.S. Equities Exchange 0.66%
10. BNY Mellon Capital Markets LLC 0.56%
INFORMATION CONCERNING SIGNIFICANT VENUES :
1. Citadel Securities LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 42.47%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 62.71%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 84.21%
2. VIRTU Americas LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 40.77%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 18.31%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
3. Two Sigma Securities, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 4.78%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.68%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
4. G1 Execution Services, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 3.41%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.34%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131
SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018
5. Cboe BYX U.S. Equities Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 2.86%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 1.02%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
6. Instinet LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 2.64%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.34%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
7. National Financial Services LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 1.98%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.34%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
8. NASDAQ Execution Services, LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.00%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 6.44%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
9. Cboe EDGX U.S. Equities Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.00%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 4.75%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%
10. BNY Mellon Capital Markets LLC
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.66%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 0.00%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%

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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131

SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018

EXCHANGE - LISTED OPTIONS
SUMMARY STATISTICS :
NON-DIRECTED ORDERS AS PERCENTAGE OF TOTAL CUSTOMER ORDERS 100.00%
MARKET ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 38.25%
LIMIT ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 60.39%

OTHER ORDERS AS PERCENTAGE OF TOTAL NON-DIRECTED ORDERS 1.36%
VENUES RECEIVING SIGNIFICANT PERCENTAGE OF TOTAL NON-DIRECTED ORDERS :
1. NASDAQ PHLX Options 19.35%
2. Cboe Options Exchange 19.13%
3. NASDAQ Options Market 14.76%
4. The MIAX Options Exchange 8.81%
5. BOX Option Exchange 7.91%
6. Cboe BZX Options Exchange, Inc. 7.15%
7. ISE Gemini Options Exchange 7.15%
8. NYSE Arca Options 6.40%
9. Cboe EDGX Option Exchange 4.14%
10. NYSE American Options 3.54%
INFORMATION CONCERNING SIGNIFICANT VENUES :
1. NASDAQ PHLX Options
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 32.87%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 10.97%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 11.11%
2. Cboe Options Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 26.97%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 12.97%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 72.22%
3. NASDAQ Options Market
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 0.79%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 23.82%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 5.56%
4. The MIAX Options Exchange
TYPES OF ORDERS ROUTED TO VENUE :
MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS 6.30%
LIMIT ORDERS AS PERCENTAGE OF TOTAL LIMIT ORDERS 10.60%
OTHER ORDERS AS PERCENTAGE OF TOTAL OTHER ORDERS 0.00%



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LASALLE ST. SECURITIES, L.L.C.
940 N. INDUSTRIAL DR.

ELMHURST, IL 60126-1131
SEC RULE 606, QUARTERLY REPORT FOR THE QUARTER ENDING MARCH 31,2018
  5. BOX Option Exchange
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                  13.39%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   4.49%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   5.56%
  6. Cboe BZX Options Exchange, Inc.
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   1.97%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                  10.60%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
  7. ISE Gemini Options Exchange
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   1.57%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                  10.85%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
  8. NYSE Arca Options
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   0.39%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                  10.35%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
  9. Cboe EDGX Option Exchange
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   5.31%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   3.49%
       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   0.00%
 10. NYSE American Options
      TYPES OF ORDERS ROUTED TO VENUE :
       MARKET ORDERS AS PERCENTAGE OF TOTAL MARKET ORDERS                   7.28%
       LIMIT  ORDERS AS PERCENTAGE OF TOTAL LIMIT  ORDERS                   1.12%

       OTHER  ORDERS AS PERCENTAGE OF TOTAL OTHER  ORDERS                   5.56%
*END OF DATA*