<?xml version="1.0" encoding="UTF-8" standalone="no"?><heldOrderRoutingPublicReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="oh-20191231.xsd"><version>1.2</version><bd>Northern Trust Securities Inc</bd><year>2023</year><qtr>1</qtr><timestamp>2023-04-10T15:16:02Z</timestamp><rMonthly><year>2023</year><mon>1</mon><rSP500><ndoPct>100.00</ndoPct><ndoMarketPct>92.57</ndoMarketPct><ndoMarketableLimitPct>1.02</ndoMarketableLimitPct><ndoNonmarketableLimitPct>2.37</ndoNonmarketableLimitPct><ndoOtherPct>4.04</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-369.2864</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.9818</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-12.0296</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-4.6202</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-9.3800</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-8.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-28.3128</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-8.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rSP500><rOtherStocks><ndoPct>100.00</ndoPct><ndoMarketPct>81.20</ndoMarketPct><ndoMarketableLimitPct>6.67</ndoMarketableLimitPct><ndoNonmarketableLimitPct>4.89</ndoNonmarketableLimitPct><ndoOtherPct>7.24</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-777.7032</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.9849</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-74.4384</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-1.7424</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-48.7928</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-7.2761</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-25.8784</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-8.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rOtherStocks><rOptions><ndoPct>100.00</ndoPct><ndoMarketPct>0.00</ndoMarketPct><ndoMarketableLimitPct>0.00</ndoMarketableLimitPct><ndoNonmarketableLimitPct>0.00</ndoNonmarketableLimitPct><ndoOtherPct>100.00</ndoOtherPct><rVenues><rVenue><name>DASH ATS</name><mic>DASH</mic><orderPct>57.37</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>57.37</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects/></rVenue><rVenue><name>WALL STREET ACCESS NYC</name><mic>WABR</mic><orderPct>39.32</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>39.32</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Routing decisions for customer orders are not influenced by any agreement that provides an incentive to route to the market or meeting minimum order flow.  Northern Trust Securities, Inc. receives no payment for order flow for these orders and has no volume based thresholds and is charged a flat rate.</materialAspects></rVenue></rVenues></rOptions></rMonthly><rMonthly><year>2023</year><mon>2</mon><rSP500><ndoPct>100.00</ndoPct><ndoMarketPct>92.56</ndoMarketPct><ndoMarketableLimitPct>0.83</ndoMarketableLimitPct><ndoNonmarketableLimitPct>3.22</ndoNonmarketableLimitPct><ndoOtherPct>3.39</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-303.2296</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.9487</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-8.7488</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-2.7361</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-12.5784</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-5.6601</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-18.6464</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-8.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rSP500><rOtherStocks><ndoPct>100.00</ndoPct><ndoMarketPct>81.47</ndoMarketPct><ndoMarketableLimitPct>4.83</ndoMarketableLimitPct><ndoNonmarketableLimitPct>5.87</ndoNonmarketableLimitPct><ndoOtherPct>7.83</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-602.8144</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.9816</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-65.1280</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-6.3094</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-28.1952</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-5.4840</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-25.6416</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-8.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rOtherStocks><rOptions><ndoPct>100.00</ndoPct><ndoMarketPct>0.00</ndoMarketPct><ndoMarketableLimitPct>0.00</ndoMarketableLimitPct><ndoNonmarketableLimitPct>0.00</ndoNonmarketableLimitPct><ndoOtherPct>100.00</ndoOtherPct><rVenues><rVenue><name>DASH ATS</name><mic>DASH</mic><orderPct>59.54</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>59.54</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects/></rVenue><rVenue><name>WALL STREET ACCESS NYC</name><mic>WABR</mic><orderPct>40.46</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>40.46</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Routing decisions for customer orders are not influenced by any agreement that provides an incentive to route to the market or meeting minimum order flow.  Northern Trust Securities, Inc. receives no payment for order flow for these orders and has no volume based thresholds and is charged a flat rate.</materialAspects></rVenue></rVenues></rOptions></rMonthly><rMonthly><year>2023</year><mon>3</mon><rSP500><ndoPct>100.00</ndoPct><ndoMarketPct>73.30</ndoMarketPct><ndoMarketableLimitPct>1.41</ndoMarketableLimitPct><ndoNonmarketableLimitPct>3.61</ndoNonmarketableLimitPct><ndoOtherPct>21.69</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-480.7336</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.8279</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-24.2320</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-5.3504</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-27.4000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-8.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-33.3408</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-8.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rSP500><rOtherStocks><ndoPct>100.00</ndoPct><ndoMarketPct>76.80</ndoMarketPct><ndoMarketableLimitPct>5.74</ndoMarketableLimitPct><ndoNonmarketableLimitPct>4.85</ndoNonmarketableLimitPct><ndoOtherPct>12.62</ndoOtherPct><rVenues><rVenue><name>CLEARPOOL EXECUTION SERVICES, LLC</name><mic>CPEM</mic><orderPct>100.00</orderPct><marketPct>100.00</marketPct><marketableLimitPct>100.00</marketableLimitPct><nonMarketableLimitPct>100.00</nonMarketableLimitPct><otherPct>100.00</otherPct><netPmtPaidRecvMarketOrdersUsd>-840.2072</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>-7.9836</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>-113.1784</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>-4.2168</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>-41.2008</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>-5.6371</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>-49.2616</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>-5.1606</netPmtPaidRecvOtherOrdersCph><materialAspects>Northern Trust Securities, Inc. receives payment for order flow in the form of discounts, rebates, reductions of fees or credits.  Such payment is variable based on the size and spread in the security at the time of order execution and averages less than $0.0018 per share.  Under some circumstances, the amount of such remuneration may exceed the amount that NTSI is charged by such trading venues.  This does not alter NTSI's policy to route customer orders to the trading center where it believes clients will receive the best execution, taking into account, among other factors, price, transaction cost, volatility, market depth, quality of service, speed and efficiency.</materialAspects></rVenue></rVenues></rOtherStocks><rOptions><ndoPct>100.00</ndoPct><ndoMarketPct>0.00</ndoMarketPct><ndoMarketableLimitPct>0.00</ndoMarketableLimitPct><ndoNonmarketableLimitPct>0.00</ndoNonmarketableLimitPct><ndoOtherPct>100.00</ndoOtherPct><rVenues><rVenue><name>DASH ATS</name><mic>DASH</mic><orderPct>76.91</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>76.91</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects/></rVenue><rVenue><name>WALL STREET ACCESS NYC</name><mic>WABR</mic><orderPct>23.09</orderPct><marketPct>0.00</marketPct><marketableLimitPct>0.00</marketableLimitPct><nonMarketableLimitPct>0.00</nonMarketableLimitPct><otherPct>23.09</otherPct><netPmtPaidRecvMarketOrdersUsd>0.0000</netPmtPaidRecvMarketOrdersUsd><netPmtPaidRecvMarketOrdersCph>0.0000</netPmtPaidRecvMarketOrdersCph><netPmtPaidRecvMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvMarketableLimitOrdersUsd><netPmtPaidRecvMarketableLimitOrdersCph>0.0000</netPmtPaidRecvMarketableLimitOrdersCph><netPmtPaidRecvNonMarketableLimitOrdersUsd>0.0000</netPmtPaidRecvNonMarketableLimitOrdersUsd><netPmtPaidRecvNonMarketableLimitOrdersCph>0.0000</netPmtPaidRecvNonMarketableLimitOrdersCph><netPmtPaidRecvOtherOrdersUsd>0.0000</netPmtPaidRecvOtherOrdersUsd><netPmtPaidRecvOtherOrdersCph>0.0000</netPmtPaidRecvOtherOrdersCph><materialAspects>Routing decisions for customer orders are not influenced by any agreement that provides an incentive to route to the market or meeting minimum order flow.  Northern Trust Securities, Inc. receives no payment for order flow for these orders and has no volume based thresholds and is charged a flat rate.</materialAspects></rVenue></rVenues></rOptions></rMonthly></heldOrderRoutingPublicReport>