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2026Q2 2026Q1

Adopted Clearing Firm Rule 606 Reports

Under FINRA Rule 6151, this broker-dealer adopts by reference the 606 routing reports of its clearing firm(s): APEX CLEARING CORPORATION, WELLS FARGO CLEARING SERVICES, LLC. Every underlying execution venue and clearing context is evaluated below.

CRD #290244 Review Period: 2026Q1 Filing: Adopts clearing firm report

LINDEN THOMAS AND COMPANY SECURITIES, LLC (CRD #290244) — Quarterly Rule 606 vs. Amended Rule 605 Competing Market Review

Name: LINDEN THOMAS AND COMPANY SECURITIES, LLC (CRD #290244) 2026Q1 Execution Quality Benchmark
Creator: Execution Reports
License: https://executionreports.com/methodology

• 0 COMPETING-MARKET EXCEPTIONS DETECTED (>1.0 BPS THRESHOLD)

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Primary Routed Venues (606)

1. CITADEL SECURITIES LLC(435.6%)

2. Wells Fargo Securities(333.3%)

3. Virtu Americas, LLC(255.1%)

Top routed order shares

Disclosed PFOF / Rebates

Clears via APEX CLEARING CORPORATION, WELLS FARGO CLEARING SERVICES, LLC • Subject to 5310.09(c) supervision

Clearing firm adoption

Competing-Market Exceptions

0 of 0

Scored cells with >1.0 bps shortfall

Data Coverage

0 mo • 0 builds

Amended 605 builds

Rule 5310.09 Exceptions Preview (0 Total)

All scored order size and routing buckets where venue net price improvement trailed mix-adjusted peers by > 1.0 bps.

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No statistically significant competing-market shortfalls exceeding 1.0 bps were detected in this quarter’s scored cells.

FINRA Rule 5310.09 Review Packet

LINDEN THOMAS AND COMPANY SECURITIES, LLC

CRD Number: 290244 • Quarter: 2026Q1 • Generated: Wed, 14 Oct 2026 20:21:08 GMT

Methodology: exq-2

Status: CLOSED QUARTER

Resolved Rule 606 Source Filings

Author / Clearing Firm	CRD	Variant / Context	Version	SHA-256 Digest	Source Document
APEX Clearing(Clearing: APEX CLEARING CORPORATION)	13071	APEX	V1	8be8d0d8717d039a23d9f624fe449a72365d42c62f2d70c840db5669a6e48e2e	Download XML ↗
Wells Fargo Clearing Services, LLC(Clearing: WELLS FARGO CLEARING SERVICES, LLC)	19616	WELS	V1	0c418d8af57a887d45527b0fd1e8fc00c3f89301c5f09f001ee2f0722f5dac6e	Download XML ↗

1. SEC Rule 606(a)(1) Order Routing

Quarterly non-directed customer order routing shares and net PFOF/rebates by section and venue.

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Month	Section	Execution Venue	605 Reporter	Route %	Market %	Mkt Limit %	Non-Mkt %	PFOF Mkt (¢/100)	PFOF Limit (¢/100)
202601	options	Instinet, LLC	Unmapped	21.9%	12.0%	6.9%	6.5%	0.00 ¢	0.00 ¢
202601	options	Dash/IMC Financial Markets	Unmapped	18.8%	20.6%	22.3%	22.5%	27.26 ¢	33.17 ¢
202601	options	Jane Street Capital	JNST	17.4%	21.6%	22.8%	19.5%	28.17 ¢	33.03 ¢
202601	options	CITADEL SECURITIES LLC	CDRG	16.0%	14.3%	12.5%	17.1%	28.14 ¢	34.41 ¢
202601	options	Wolverine Execution Services, LLC	Unmapped	13.4%	6.8%	10.1%	11.1%	30.97 ¢	36.95 ¢
202601	options	Global Execution Brokers LP	Unmapped	7.2%	16.9%	17.7%	16.5%	26.53 ¢	31.78 ¢
202601	options	Matrix Executions, LLC	Unmapped	5.3%	7.7%	7.8%	6.9%	24.86 ¢	30.78 ¢
202601	other_stocks	CITADEL SECURITIES LLC	CDRG	39.2%	8.5%	52.5%	53.0%	16.60 ¢	16.72 ¢
202601	other_stocks	Virtu Americas, LLC	NITE	28.7%	52.0%	16.1%	20.6%	17.40 ¢	17.53 ¢
202601	other_stocks	Jane Street Capital	JNST	14.9%	9.0%	17.6%	16.4%	16.23 ¢	17.48 ¢
202601	other_stocks	Hudson River Trading (HRT)	HRTF	7.6%	11.6%	4.8%	5.2%	16.14 ¢	18.01 ¢
202601	other_stocks	GTS SECURITIES LLC	Unmapped	5.4%	9.2%	4.5%	3.8%	16.55 ¢	17.72 ¢
202601	sp500	Virtu Americas, LLC	NITE	43.6%	69.5%	18.9%	20.5%	17.58 ¢	19.86 ¢
202601	sp500	CITADEL SECURITIES LLC	CDRG	28.2%	5.6%	41.5%	54.0%	20.00 ¢	18.55 ¢
202601	sp500	Jane Street Capital	JNST	10.3%	6.9%	12.1%	12.3%	20.00 ¢	20.00 ¢
202601	sp500	Hudson River Trading (HRT)	HRTF	6.7%	7.7%	3.9%	4.8%	20.00 ¢	20.00 ¢
202601	sp500	GTS SECURITIES LLC	Unmapped	4.3%	5.2%	3.8%	3.7%	20.00 ¢	20.00 ¢
202602	options	Instinet, LLC	Unmapped	24.1%	13.0%	6.5%	6.4%	0.00 ¢	0.00 ¢
202602	options	Dash/IMC Financial Markets	Unmapped	19.1%	19.3%	21.2%	20.6%	26.21 ¢	30.67 ¢
202602	options	CITADEL SECURITIES LLC	CDRG	15.3%	13.8%	12.7%	16.5%	27.57 ¢	31.67 ¢
202602	options	Jane Street Capital	JNST	13.6%	19.8%	19.6%	15.6%	26.30 ¢	30.25 ¢
202602	options	Wolverine Execution Services, LLC	Unmapped	13.1%	6.1%	10.1%	11.3%	34.28 ¢	35.91 ¢
202602	options	Global Execution Brokers LP	Unmapped	9.5%	19.9%	22.0%	22.6%	26.49 ¢	31.80 ¢
202602	options	Matrix Executions, LLC	Unmapped	5.3%	8.1%	7.9%	6.9%	25.21 ¢	29.13 ¢
202602	other_stocks	CITADEL SECURITIES LLC	CDRG	32.5%	8.3%	41.3%	40.0%	17.06 ¢	17.77 ¢
202602	other_stocks	Virtu Americas, LLC	NITE	26.2%	51.3%	19.3%	18.8%	17.95 ¢	18.55 ¢
202602	other_stocks	Jane Street Capital	JNST	23.7%	10.4%	30.9%	26.9%	16.44 ¢	18.29 ¢
202602	other_stocks	Hudson River Trading (HRT)	HRTF	7.8%	10.0%	2.6%	7.5%	16.45 ¢	18.62 ¢
202602	other_stocks	GTS SECURITIES LLC	Unmapped	5.7%	9.4%	3.0%	5.4%	16.88 ¢	18.58 ¢
202602	sp500	Virtu Americas, LLC	NITE	40.0%	70.8%	21.9%	23.0%	17.62 ¢	19.83 ¢
202602	sp500	CITADEL SECURITIES LLC	CDRG	25.5%	5.1%	35.3%	38.7%	20.00 ¢	18.31 ¢
202602	sp500	Jane Street Capital	JNST	22.6%	7.3%	30.5%	31.2%	20.00 ¢	20.00 ¢
202602	sp500	Hudson River Trading (HRT)	HRTF	4.4%	6.5%	2.1%	2.5%	20.00 ¢	20.00 ¢
202603	options	Instinet, LLC	Unmapped	25.8%	16.2%	8.5%	7.1%	0.00 ¢	0.00 ¢
202603	options	Dash/IMC Financial Markets	Unmapped	16.8%	18.4%	22.5%	19.8%	26.08 ¢	29.90 ¢
202603	options	Jane Street Capital	JNST	15.4%	18.9%	18.9%	15.5%	25.00 ¢	28.91 ¢
202603	options	Wolverine Execution Services, LLC	Unmapped	14.3%	5.3%	9.2%	11.0%	30.76 ¢	34.62 ¢
202603	options	CITADEL SECURITIES LLC	CDRG	13.4%	14.4%	12.0%	16.1%	26.72 ¢	30.14 ¢
202603	options	Global Execution Brokers LP	Unmapped	9.0%	19.0%	21.3%	23.4%	26.04 ¢	30.65 ¢
202603	options	Matrix Executions, LLC	Unmapped	5.3%	7.8%	7.6%	7.2%	0.00 ¢	28.58 ¢
202603	other_stocks	CITADEL SECURITIES LLC	CDRG	37.2%	10.6%	43.3%	41.3%	16.11 ¢	17.80 ¢
202603	other_stocks	Jane Street Capital	JNST	33.4%	9.1%	36.5%	38.0%	15.10 ¢	18.29 ¢
202603	other_stocks	Virtu Americas, LLC	NITE	22.6%	53.8%	16.7%	17.5%	17.10 ¢	18.07 ¢
202603	sp500	Virtu Americas, LLC	NITE	42.5%	73.3%	20.2%	20.5%	17.88 ¢	19.89 ¢
202603	sp500	CITADEL SECURITIES LLC	CDRG	27.7%	6.5%	42.6%	44.2%	20.00 ¢	19.34 ¢
202603	sp500	Jane Street Capital	JNST	19.3%	6.3%	28.7%	28.3%	20.00 ¢	20.00 ¢
202603	sp500	Hudson River Trading (HRT)	HRTF	4.8%	6.0%	2.5%	3.1%	20.00 ¢	20.00 ¢
202601	options	CITADEL SECURITIES LLC	CDRG	38.4%	38.5%	38.7%	38.3%	0.00 ¢	0.00 ¢
202601	options	Global Execution Brokers LP	Unmapped	32.0%	31.9%	32.9%	32.1%	0.00 ¢	0.00 ¢
202601	options	Wolverine Execution Services, LLC	Unmapped	29.6%	29.5%	28.4%	29.6%	0.00 ¢	0.00 ¢
202601	options	Interactive Brokers LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202601	other_stocks	Wells Fargo Securities	Unmapped	55.8%	84.4%	65.0%	17.1%	0.00 ¢	0.00 ¢
202601	other_stocks	CITADEL SECURITIES LLC	CDRG	10.8%	5.8%	11.9%	15.2%	0.00 ¢	0.00 ¢
202601	other_stocks	Virtu Americas, LLC	NITE	10.3%	3.0%	9.0%	20.6%	0.00 ¢	0.00 ¢
202601	other_stocks	Two Sigma Securities, LLC	Unmapped	7.3%	0.5%	3.5%	18.1%	0.00 ¢	0.00 ¢
202601	other_stocks	UBS Securities, LLC	Unmapped	6.8%	0.5%	4.6%	15.2%	0.00 ¢	0.00 ¢
202601	other_stocks	G1 Execution Services, LLC	ETMM	5.3%	0.5%	2.0%	12.4%	0.00 ¢	0.00 ¢
202601	other_stocks	Wells Fargo Clearing Services, LLC	Unmapped	1.5%	2.4%	0.6%	0.2%	0.00 ¢	0.00 ¢
202601	other_stocks	Jane Street Capital	JNST	1.3%	1.9%	1.4%	0.4%	0.00 ¢	0.00 ¢
202601	other_stocks	GTS SECURITIES LLC	Unmapped	0.8%	0.9%	1.9%	0.7%	0.00 ¢	0.00 ¢
202601	other_stocks	MCAP LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202601	sp500	Wells Fargo Securities	Unmapped	64.9%	88.5%	64.8%	16.6%	0.00 ¢	0.00 ¢
202601	sp500	CITADEL SECURITIES LLC	CDRG	8.8%	4.5%	9.3%	15.2%	0.00 ¢	0.00 ¢
202601	sp500	Virtu Americas, LLC	NITE	7.8%	2.3%	7.6%	19.6%	0.00 ¢	0.00 ¢
202601	sp500	Two Sigma Securities, LLC	Unmapped	5.9%	0.4%	3.1%	18.8%	0.00 ¢	0.00 ¢
202601	sp500	UBS Securities, LLC	Unmapped	5.5%	0.3%	9.2%	16.1%	0.00 ¢	0.00 ¢
202601	sp500	G1 Execution Services, LLC	ETMM	4.3%	0.3%	3.8%	13.2%	0.00 ¢	0.00 ¢
202601	sp500	Wells Fargo Clearing Services, LLC	Unmapped	1.9%	2.5%	1.4%	0.4%	0.00 ¢	0.00 ¢
202601	sp500	Jane Street Capital	JNST	0.8%	1.1%	0.6%	0.1%	0.00 ¢	0.00 ¢
202602	options	CITADEL SECURITIES LLC	CDRG	38.9%	38.9%	38.9%	38.8%	0.00 ¢	0.00 ¢
202602	options	Global Execution Brokers LP	Unmapped	31.1%	30.9%	31.8%	31.1%	0.00 ¢	0.00 ¢
202602	options	Wolverine Execution Services, LLC	Unmapped	30.0%	30.1%	29.4%	30.0%	0.00 ¢	0.00 ¢
202602	options	Interactive Brokers LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202602	other_stocks	Wells Fargo Securities	Unmapped	47.9%	73.1%	60.1%	14.2%	0.00 ¢	0.00 ¢
202602	other_stocks	CITADEL SECURITIES LLC	CDRG	18.5%	16.0%	15.2%	20.8%	0.00 ¢	0.00 ¢
202602	other_stocks	Virtu Americas, LLC	NITE	9.9%	3.3%	8.5%	17.7%	0.00 ¢	0.00 ¢
202602	other_stocks	UBS Securities, LLC	Unmapped	7.5%	0.5%	4.3%	16.9%	0.00 ¢	0.00 ¢
202602	other_stocks	Two Sigma Securities, LLC	Unmapped	7.4%	0.7%	4.1%	17.6%	0.00 ¢	0.00 ¢
202602	other_stocks	G1 Execution Services, LLC	ETMM	5.0%	0.6%	3.9%	11.4%	0.00 ¢	0.00 ¢
202602	other_stocks	Jane Street Capital	JNST	1.6%	2.4%	1.5%	0.5%	0.00 ¢	0.00 ¢
202602	other_stocks	Wells Fargo Clearing Services, LLC	Unmapped	1.4%	2.4%	0.5%	0.2%	0.00 ¢	0.00 ¢
202602	other_stocks	GTS SECURITIES LLC	Unmapped	0.8%	1.0%	1.8%	0.7%	0.00 ¢	0.00 ¢
202602	other_stocks	MCAP LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202602	sp500	Wells Fargo Securities	Unmapped	57.8%	79.9%	63.6%	15.6%	0.00 ¢	0.00 ¢
202602	sp500	CITADEL SECURITIES LLC	CDRG	15.6%	12.6%	12.2%	19.7%	0.00 ¢	0.00 ¢
202602	sp500	Virtu Americas, LLC	NITE	7.4%	2.2%	6.6%	16.3%	0.00 ¢	0.00 ¢
202602	sp500	UBS Securities, LLC	Unmapped	6.3%	0.4%	9.2%	17.9%	0.00 ¢	0.00 ¢
202602	sp500	Two Sigma Securities, LLC	Unmapped	5.9%	0.3%	2.3%	18.2%	0.00 ¢	0.00 ¢
202602	sp500	G1 Execution Services, LLC	ETMM	4.0%	0.4%	3.9%	11.8%	0.00 ¢	0.00 ¢
202602	sp500	Wells Fargo Clearing Services, LLC	Unmapped	1.8%	2.5%	1.4%	0.4%	0.00 ¢	0.00 ¢
202602	sp500	Jane Street Capital	JNST	1.2%	1.7%	0.8%	0.2%	0.00 ¢	0.00 ¢
202603	options	CITADEL SECURITIES LLC	CDRG	37.0%	37.4%	36.5%	37.0%	0.00 ¢	0.00 ¢
202603	options	Global Execution Brokers LP	Unmapped	31.9%	31.9%	33.4%	31.7%	0.00 ¢	0.00 ¢
202603	options	Wolverine Execution Services, LLC	Unmapped	31.1%	30.8%	30.1%	31.3%	0.00 ¢	0.00 ¢
202603	options	Interactive Brokers LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202603	other_stocks	Wells Fargo Securities	Unmapped	48.9%	76.8%	57.7%	14.4%	0.00 ¢	0.00 ¢
202603	other_stocks	CITADEL SECURITIES LLC	CDRG	17.7%	13.4%	16.6%	21.5%	0.00 ¢	0.00 ¢
202603	other_stocks	Virtu Americas, LLC	NITE	9.0%	2.5%	7.8%	17.5%	0.00 ¢	0.00 ¢
202603	other_stocks	UBS Securities, LLC	Unmapped	7.3%	0.4%	5.2%	16.0%	0.00 ¢	0.00 ¢
202603	other_stocks	G1 Execution Services, LLC	ETMM	6.7%	0.5%	4.2%	15.0%	0.00 ¢	0.00 ¢
202603	other_stocks	Two Sigma Securities, LLC	Unmapped	6.5%	0.5%	4.2%	14.0%	0.00 ¢	0.00 ¢
202603	other_stocks	Jane Street Capital	JNST	1.6%	2.4%	1.9%	0.6%	0.00 ¢	0.00 ¢
202603	other_stocks	Wells Fargo Clearing Services, LLC	Unmapped	1.4%	2.4%	0.6%	0.2%	0.00 ¢	0.00 ¢
202603	other_stocks	GTS SECURITIES LLC	Unmapped	0.9%	1.0%	1.9%	0.8%	0.00 ¢	0.00 ¢
202603	other_stocks	MCAP LLC	Unmapped	0.0%	0.0%	0.0%	0.0%	0.00 ¢	0.00 ¢
202603	sp500	Wells Fargo Securities	Unmapped	57.9%	83.2%	61.4%	13.2%	0.00 ¢	0.00 ¢
202603	sp500	CITADEL SECURITIES LLC	CDRG	14.8%	10.4%	12.8%	20.9%	0.00 ¢	0.00 ¢
202603	sp500	Virtu Americas, LLC	NITE	7.0%	1.7%	5.8%	17.0%	0.00 ¢	0.00 ¢
202603	sp500	UBS Securities, LLC	Unmapped	6.4%	0.3%	10.5%	17.3%	0.00 ¢	0.00 ¢
202603	sp500	G1 Execution Services, LLC	ETMM	5.8%	0.4%	4.6%	16.2%	0.00 ¢	0.00 ¢
202603	sp500	Two Sigma Securities, LLC	Unmapped	5.4%	0.3%	2.5%	14.9%	0.00 ¢	0.00 ¢
202603	sp500	Wells Fargo Clearing Services, LLC	Unmapped	1.7%	2.4%	1.7%	0.3%	0.00 ¢	0.00 ¢
202603	sp500	Jane Street Capital	JNST	0.9%	1.3%	0.6%	0.1%	0.00 ¢	0.00 ¢

2. Venue Scorecards (Amended Rule 605)

Execution quality metrics for routed venues benchmarked against mix-adjusted competitors on identical symbols and size tiers.

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Month	Venue	Class	Notional × Lot	Fill Rate	PI Rate	NPI (bps)	Peer Bench (bps)	Coverage	Rank Pctl	Eff Spread	Speed <1s

3. Routing-Weighted Composite Quality

Implied execution quality achieved by the firm’s routing mix across the 24 amended size tiers, compared against the best and median competing venues.

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Month	Class	Notional × Lot	Metric	Firm Composite	Best Competing	Best Venue	Median Competing	Mapped Flow

4. Payment for Order Flow vs. Execution Quality

Addresses FINRA 5310.09 conflicts: comparing PFOF received (¢/100 sh) against net price improvement shortfall vs mix-adjusted peers.

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Month	Venue	Order Class	Route %	606 Net PFOF (¢/100)	NPI (bps)	Peer Bench (bps)	Delta (bps)	Ref Price	Delta (¢/100 sh)	Conflict Flag

Conflict Methodology Note: Quality delta (¢/100 sh) is estimated as Δ_bps × ref_price. A positive PFOF beside a negative delta indicates the firm received payment while the venue delivered less price improvement than competing market centers on identical symbols and size tiers.

5. Material Changes Since Prior Quarter

Changes in routing share (≥ 5 pp), newly added/dropped venues, and PFOF rate shifts since 2025Q4.

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No material shifts (≥ 5 percentage point route share or PFOF rate change) detected relative to 2025Q4.

6. Coverage, Exclusions & Standing Limitations

Mandatory regulatory disclosure of data availability, unmapped destinations, and methodological caveats.

Suppressed Cells

Cells with < 100 covered orders

Unmapped Venues

606 destinations without 605 match

Challenged / Missing 605

Venues missing monthly 605 report

Unmapped Routing Destinations:

GTS SECURITIES LLC (name:GTS SECURITIES), MCAP LLC (name:MCAP), Two Sigma Securities, LLC (name:TWO SIGMA SECURITIES), UBS Securities, LLC (name:UBS SECURITIES), Wells Fargo Clearing Services, LLC (name:WELLS FARGO CLEARING SERVICES), Wells Fargo Securities (name:WELLS FARGO SECURITIES)

Standing Review Limitations:

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.