ONECHRONOS

Reporter ID: CGXS • Quarter: 2026Q3 • Methodology: exq-3

Status: ACTIVE

Generated: Thu, 15 Oct 2026 22:42:07 GMT

Quarter:2026Q3

Covered Orders3,120,699,832Across all reported tiers

Covered Shares970,590,136,647In Q3 2026

Active Tiers56Order class × notional buckets

Routing Brokers0Disclosed in 606 filings

1. Amended Rule 605 Scorecard vs. Mix-Adjusted Peers — 2026-08

Execution metrics across order classes and the 24 notional × lot categories, benchmarked against what competing market centers delivered on identical symbols.

Class	Notional × Lot	Orders	Covered Sh	Fill Rate	PI Rate	NPI (bps)	Peer Bench (bps)	Coverage	Rank Pctl	Eff Spread	Speed <1s
Marketable Limit	<$250 • Odd Lot	1,506,494	19,198,968	12.2%	15.1%	0.9 bps	3.1 bps	96%	19th	$0.0329	99.9%
Marketable Limit	<$250 • Round Lot	96,627	19,080,433	7.2%	28.4%	1.5 bps	-4.4 bps	85%	23rd	$0.0058	98.7%
Marketable Limit	$250–$999 • Odd Lot	1,125,143	38,399,871	10.2%	10.4%	0.8 bps	1.5 bps	94%	20th	$0.0367	99.7%
Marketable Limit	$250–$999 • Round Lot	590,104	130,320,136	4.8%	10.3%	0.5 bps	-2.5 bps	90%	16th	$0.0102	97.3%
Marketable Limit	$1k–$5k • Odd Lot	808,375	37,141,130	8.9%	16.2%	0.5 bps	-1.0 bps	84%	20th	$0.0445	99.4%
Marketable Limit	$1k–$5k • Round Lot	3,842,750	771,043,837	3.6%	8.8%	0.3 bps	-2.0 bps	95%	16th	$0.0139	97.6%
Marketable Limit	$5k–$10k • Odd Lot	288,720	13,913,658	5.1%	36.0%	0.6 bps	-2.4 bps	62%	29th	$0.1111	99.0%
Marketable Limit	$5k–$10k • Round Lot	1,956,745	566,320,196	2.8%	11.7%	0.3 bps	-1.4 bps	85%	19th	$0.0215	97.8%
Marketable Limit	$10k–$20k • Odd Lot	44,765	2,318,942	9.8%	54.1%	0.8 bps	-0.7 bps	52%	39th	$0.2489	99.1%
Marketable Limit	$10k–$20k • Round Lot	1,833,644	762,360,745	2.1%	13.5%	0.3 bps	-1.3 bps	82%	21st	$0.0310	98.5%
Marketable Limit	$20k–$50k • Odd Lot	2,236	167,873	16.8%	70.1%	1.3 bps	0.3 bps	34%	51st	$0.6168	100.0%
Marketable Limit	$20k–$50k • Round Lot	1,296,013	1,047,653,338	1.5%	13.8%	0.3 bps	-1.0 bps	78%	24th	$0.0407	98.6%
Marketable Limit	$50k–$200k • Round Lot	967,945	3,363,826,689	0.5%	11.2%	0.2 bps	-0.9 bps	77%	27th	$0.0381	98.6%
Marketable Limit	≥$200k • Round Lot	362,375	5,733,649,397	0.2%	7.0%	-0.1 bps	-0.7 bps	73%	52nd	$0.0359	97.4%
Non-Marketable Limit	<$250 • Odd Lot	57,548,552	434,051,197	1.3%	99.3%	13.9 bps	48.5 bps	100%	25th	$0.0008	85.6%
Non-Marketable Limit	<$250 • Round Lot	16,848,983	2,427,613,756	0.2%	99.8%	35.6 bps	80.9 bps	100%	23rd	$0.0001	92.4%
Non-Marketable Limit	$250–$999 • Odd Lot	47,032,858	890,414,289	1.3%	98.9%	10.5 bps	37.9 bps	100%	26th	$0.0015	87.0%
Non-Marketable Limit	$250–$999 • Round Lot	38,827,927	5,343,621,344	0.4%	99.5%	15.2 bps	53.9 bps	100%	4th	$0.0005	92.1%
Non-Marketable Limit	$1k–$5k • Odd Lot	78,536,659	2,911,031,598	0.7%	98.7%	9.2 bps	33.5 bps	100%	36th	$0.0053	84.3%
Non-Marketable Limit	$1k–$5k • Round Lot	456,385,960	57,010,719,539	0.2%	99.1%	9.4 bps	53.8 bps	100%	14th	$0.0034	83.8%
Non-Marketable Limit	$5k–$10k • Odd Lot	71,531,580	3,352,639,597	0.3%	99.2%	8.7 bps	31.6 bps	100%	47th	$0.0211	80.2%
Non-Marketable Limit	$5k–$10k • Round Lot	374,220,431	52,268,084,160	0.2%	99.0%	8.4 bps	48.5 bps	100%	24th	$0.0085	82.1%
Non-Marketable Limit	$10k–$20k • Odd Lot	36,322,208	1,857,979,877	0.2%	99.3%	8.5 bps	23.6 bps	100%	46th	$0.0307	83.5%
Non-Marketable Limit	$10k–$20k • Round Lot	387,322,150	62,144,539,345	0.2%	99.2%	7.8 bps	42.2 bps	100%	29th	$0.0161	84.6%
Non-Marketable Limit	$20k–$50k • Odd Lot	1,875,170	131,613,171	0.3%	99.5%	13.9 bps	19.4 bps	100%	65th	$0.0472	90.2%
Non-Marketable Limit	$20k–$50k • Round Lot	346,756,957	77,256,028,529	0.1%	99.1%	7.9 bps	38.2 bps	99%	33rd	$0.0305	87.5%
Non-Marketable Limit	$50k–$200k • Round Lot	164,377,176	107,531,569,463	0.0%	98.5%	6.7 bps	33.6 bps	97%	38th	$0.0544	91.2%
Non-Marketable Limit	≥$200k • Round Lot	18,795,316	456,398,942,650	0.0%	98.5%	9.4 bps	39.3 bps	58%	82nd	$0.0075	93.8%
Marketable Limit	<$250 • Odd Lot	47,337	100,461	46.9%	29.8%	0.5 bps	1.9 bps	88%	31st	$0.0719	100.0%
Marketable Limit	$250–$999 • Odd Lot	126,422	1,032,850	24.6%	34.0%	0.6 bps	1.5 bps	94%	32nd	$0.1083	99.9%
Marketable Limit	$250–$999 • Round Lot	151	15,123	28.6%	7.1%	0.3 bps	-1.2 bps	100%	47th	$0.0106	100.0%
Marketable Limit	$1k–$5k • Odd Lot	353,166	14,017,423	12.0%	14.5%	0.3 bps	-1.0 bps	98%	22nd	$0.0369	99.8%
Marketable Limit	$1k–$5k • Round Lot	292,974	29,460,954	9.1%	8.1%	0.1 bps	-1.8 bps	100%	25th	$0.0117	99.7%
Marketable Limit	$5k–$10k • Odd Lot	149,839	6,186,760	13.7%	31.6%	0.4 bps	-1.3 bps	83%	28th	$0.0674	99.4%
Marketable Limit	$5k–$10k • Round Lot	685,304	79,043,594	5.1%	13.2%	0.1 bps	-1.4 bps	100%	27th	$0.0166	98.9%
Marketable Limit	$10k–$20k • Odd Lot	95,606	3,525,200	12.2%	42.8%	0.4 bps	-1.1 bps	72%	32nd	$0.1373	99.3%
Marketable Limit	$10k–$20k • Round Lot	810,853	104,568,326	6.2%	21.2%	0.2 bps	-1.3 bps	99%	27th	$0.0435	99.4%
Marketable Limit	$20k–$50k • Odd Lot	39,622	1,388,388	9.2%	48.3%	0.4 bps	-0.2 bps	70%	33rd	$0.2412	99.8%
Marketable Limit	$20k–$50k • Round Lot	1,037,305	146,997,868	5.0%	24.3%	0.2 bps	-1.3 bps	98%	26th	$0.0667	99.2%
Marketable Limit	$50k–$200k • Odd Lot	349	12,548	5.7%	57.3%	0.4 bps	1.0 bps	72%	36th	$0.6982	100.0%
Marketable Limit	$50k–$200k • Round Lot	430,051	132,092,385	5.1%	23.7%	0.2 bps	-1.0 bps	93%	27th	$0.0809	99.0%
Marketable Limit	≥$200k • Round Lot	45,176	98,754,013	2.8%	18.6%	0.1 bps	-1.3 bps	62%	46th	$0.1098	98.6%
Non-Marketable Limit	<$250 • Odd Lot	6,116,229	10,228,538	2.1%	98.5%	3.5 bps	18.2 bps	100%	28th	$0.0011	93.1%
Non-Marketable Limit	$250–$999 • Odd Lot	19,299,124	95,185,151	1.4%	98.6%	3.8 bps	18.4 bps	100%	42nd	$0.0013	88.8%
Non-Marketable Limit	$250–$999 • Round Lot	2,866	289,787	10.3%	100.0%	5.8 bps	42.7 bps	100%	16th	$-0.0000	99.8%
Non-Marketable Limit	$1k–$5k • Odd Lot	31,467,588	705,785,330	1.2%	98.5%	3.9 bps	19.0 bps	100%	49th	$0.0035	86.2%
Non-Marketable Limit	$1k–$5k • Round Lot	10,837,348	1,029,473,120	0.8%	98.9%	2.6 bps	15.6 bps	100%	21st	$0.0006	90.6%
Non-Marketable Limit	$5k–$10k • Odd Lot	37,612,273	1,254,449,391	0.7%	98.8%	3.9 bps	20.5 bps	100%	49th	$0.0091	87.0%
Non-Marketable Limit	$5k–$10k • Round Lot	68,188,710	7,051,810,953	0.5%	99.1%	3.3 bps	24.0 bps	100%	62nd	$0.0035	86.3%
Non-Marketable Limit	$10k–$20k • Odd Lot	51,468,269	1,790,175,785	0.4%	99.3%	4.0 bps	16.4 bps	100%	51st	$0.0188	88.2%
Non-Marketable Limit	$10k–$20k • Round Lot	164,639,728	17,152,465,286	0.4%	99.1%	4.3 bps	29.3 bps	100%	66th	$0.0115	84.2%
Non-Marketable Limit	$20k–$50k • Odd Lot	33,177,586	1,084,871,492	0.2%	99.5%	4.2 bps	9.8 bps	100%	64th	$0.0400	92.5%
Non-Marketable Limit	$20k–$50k • Round Lot	346,065,998	43,133,286,528	0.3%	99.3%	4.0 bps	33.2 bps	100%	69th	$0.0237	87.0%
Non-Marketable Limit	$50k–$200k • Odd Lot	189,958	6,641,945	0.2%	100.0%	4.3 bps	3.8 bps	100%	53rd	$0.0995	97.3%
Non-Marketable Limit	$50k–$200k • Round Lot	224,151,185	49,148,543,252	0.2%	99.3%	3.7 bps	23.8 bps	100%	64th	$0.0423	93.4%
Non-Marketable Limit	≥$200k • Round Lot	12,264,952	5,045,490,468	0.2%	98.3%	5.6 bps	25.5 bps	93%	89th	$0.0248	81.9%

2. Broker-Dealers Routing Here (Reverse 606 Index)

Firms directing customer order flow to this market center under SEC Rule 606(a), with route percentages and PFOF rates.

No broker-dealers identified routing flow to this market center in 2026Q3.

3. Rule 605 Report Files & Ingestion History

Published monthly execution quality data files crawled from vendor and exchange landing pages.

File Name	Month	Kind	Status	Fetched At	Source URL
cgxs_605_202607.dat.zip	202607	detailed	stored	2026-10-01T00:17:38.477+00:00	File Link ↗
cgxs_605_202607.dat.zip	202607	detailed	stored	2026-10-15T21:24:38.578+00:00	File Link ↗
CGXS202608.txt.gz	202608	detailed	stored	2026-10-15T20:13:06.233656203+00:00	File Link ↗
CGXS202608.csv	202608	summary	stored	2026-10-15T21:24:35.545+00:00	File Link ↗

4. Coverage Gaps & Review Limitations

Suppressed Cells

Tiers with < 100 covered orders

Missing Files

Months unretrievable

Methodological Caveats:

A venue's Rule 605 statistics describe all flow it handled, not this firm's orders.
606 route shares are per order, not per share, and list only the top 10 venues plus any venue with at least 5% of non-directed orders.
FINRA Rule 5310.09 also requires the firm's own order-level review of its executions.
This report is not legal or compliance advice.
Net price improvement is in basis points of executed notional (quote midpoint × shares). The PFOF comparison converts the difference to ¢/100 sh at the venue's average executed price; it is an estimate.
Brokers routing here reflect venue aliases as of the last crosswalk-venues run.

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