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dark pool & off-exchange short volume — regulatory data, daily aggregate · published T+0 evening AS OF 2026-09-16

Dark pool and off-exchange short volume

Off-exchange short volume is the share of a session's off-exchange volume — the trades executed away from the lit exchanges on ATSs ("dark pools") and by internalizing dealers, reported to FINRA — that was sold short. It comes from FINRA's Reg SHO daily publication: a per-session aggregate published the evening of the trade date, not a live print tape, and its base is the off-exchange tape, not consolidated volume. A high ratio is a positioning magnitude, not a direction.

AAPLas of the 2026-09-16 sessionshort-vol ratioone sessionshort ÷ off-exchange (FINRA-reported) volume

49.2%Short-vol ratioof the 2026-09-16 session's off-exchange volume

47.3%Average ratio33 sessions held

6.1MShort volumeshares sold short, off-exchange

12.5MOff-exchange volumeshares reported to FINRA facilities

Ratio trend 33 sessions

Weekly ATS ("dark pool") volume week of 2026-08-24 · published on FINRA's own multi-week lag

23.1MATS sharesweek of 2026-08-24

467,801ATS tradestrades that week

49Avg trade sizeshares per trade — computed

Recent sessions


2026-09-16	49.2%	6.1M	42.2K	12.5M
2026-09-15	40.1%	4.7M	38.1K	11.6M
2026-09-14	46.3%	6.5M	71.8K	14.0M
2026-09-11	49.0%	10.1M	70.3K	20.5M
2026-09-10	58.9%	19.0M	86.4K	32.2M
2026-09-09	63.3%	18.9M	43.6K	29.8M
2026-09-08	59.6%	7.3M	43.2K	12.2M
2026-09-04	52.5%	7.6M	28.0K	14.5M
2026-09-03	48.3%	6.8M	96.1K	14.1M
2026-09-02	45.5%	6.7M	51.9K	14.7M
2026-09-01	51.6%	11.4M	43.3K	22.1M
2026-08-31	51.5%	6.1M	37.1K	11.9M
2026-08-28	54.2%	7.3M	25.7K	13.4M
2026-08-27	56.7%	5.8M	25.3K	10.3M
2026-08-26	51.8%	6.4M	44.2K	12.3M
2026-08-25	58.5%	5.7M	17.1K	9.7M
2026-08-24	48.3%	5.1M	18.2K	10.7M
2026-08-21	50.4%	6.3M	34.5K	12.6M
2026-08-20	39.3%	4.9M	36.7K	12.4M
2026-08-19	39.6%	6.4M	36.2K	16.1M
2026-08-18	32.9%	6.1M	40.3K	18.7M
2026-08-17	37.5%	4.4M	35.6K	11.8M
2026-08-14	32.9%	3.0M	28.5K	9.1M
2026-08-13	35.9%	4.6M	33.8K	12.7M
2026-08-12	38.7%	5.5M	44.0K	14.3M
2026-08-11	35.9%	4.7M	20.0K	13.1M
2026-08-10	42.4%	6.3M	22.1K	14.9M
2026-08-07	41.6%	5.5M	31.5K	13.3M
2026-08-06	50.9%	8.4M	40.3K	16.5M
2026-08-05	52.1%	8.5M	32.3K	16.3M

Highest off-exchange short-volume ratios

Liquid names only — a real average-dollar-volume floor from the whole-market spine, not a hand-picked list. Ranked on the latest ingested session.

2,576Names measured$25M/day liquidity floor

0.6%Median ratioacross the measured universe

2026-09-16Sessiondaily aggregate · published T+0 evening


1	SMCIP	99.9%	2.5K	2.5K	+2.9%
2	SHLD	94.2%	3.6M	3.8M	+0.2%
3	RING	91.9%	1.0M	1.1M	-1.3%
4	GPRE	91.1%	1.4M	1.5M	+1.3%
5	SCHQ	91.0%	3.2M	3.5M	+0.2%
6	MANH	90.3%	427.9K	473.7K	+1.1%
7	IRT	89.8%	1.1M	1.2M	-1.5%
8	ARCB	89.0%	113.3K	127.3K	-3.6%
9	SBIL	88.9%	29.4K	33.1K	0.0%
10	WLY	88.4%	221.6K	250.7K	+0.4%
11	EPR	88.3%	559.0K	632.8K	-2.9%
12	IXJ	88.1%	99.8K	113.2K	-0.1%
13	KRG	88.1%	789.7K	896.3K	-0.5%
14	IWN	87.9%	496.6K	564.7K	-0.8%
15	HIW	87.9%	304.7K	346.6K	-0.2%
16	XRT	87.9%	1.4M	1.6M	-0.6%
17	NE	87.5%	297.2K	339.8K	-4.7%
18	AN	87.1%	205.9K	236.4K	-4.0%
19	OTIS	86.7%	2.5M	2.9M	+1.1%
20	IGSB	86.6%	4.7M	5.4M	-0.1%
21	ACIW	86.5%	190.0K	219.6K	+0.6%
22	ONB	86.5%	1.6M	1.8M	-1.9%
23	RMD	86.5%	413.7K	478.5K	-0.5%
24	IWV	86.1%	46.4K	53.9K	-0.4%
25	ASH	86.0%	168.0K	195.2K	+0.3%
26	FULT	86.0%	449.7K	523.1K	-1.2%
27	SKYW	85.9%	102.4K	119.1K	+1.2%
28	PAG	85.9%	163.2K	189.9K	-0.9%
29	SYF	85.9%	767.5K	893.4K	-1.6%
30	VLUE	85.8%	688.3K	802.2K	-1.4%
31	SBCF	85.7%	175.0K	204.1K	-1.4%
32	SMMD	85.7%	204.0K	238.0K	-0.5%
33	FTV	85.7%	707.5K	825.7K	-2.0%
34	VCYT	85.1%	489.1K	574.4K	-4.1%
35	AMR	85.1%	136.2K	160.0K	+0.5%
36	CCEP	85.0%	902.5K	1.1M	-0.3%
37	CVBF	85.0%	515.3K	606.6K	-0.8%
38	RNR	84.5%	61.6K	72.8K	-0.1%
39	APPF	84.4%	81.6K	96.6K	-2.1%
40	TRI	84.4%	298.9K	354.3K	-1.3%
41	MSM	84.1%	272.3K	323.9K	+0.5%
42	DGX	84.0%	320.6K	381.6K	0.0%
43	HWC	83.8%	204.0K	243.3K	-1.8%
44	PI	83.7%	114.5K	136.7K	+1.8%
45	PRU	83.7%	548.7K	655.3K	-1.9%
46	RRR	83.6%	207.1K	247.7K	-1.0%
47	SON	83.6%	538.1K	643.7K	+0.3%
48	BSP	83.5%	540.1K	646.8K	-0.5%
49	MSGS	83.4%	118.0K	141.4K	+0.1%
50	MUR	83.3%	612.4K	735.0K	-5.5%

FINRA Reg SHO daily short-sale volume, 2026-09-16 session — short-vol ratio = shares sold short ÷ shares reported to FINRA facilities (the off-exchange tape: ATS + internalized prints), so the base is off-exchange volume, not consolidated volume. A daily aggregate published the evening of the trade date, not a live tape. Ratios are magnitudes, not directional signals.

ATS venues — weekly board

Which names dominate off-exchange ATS ("dark pool") volume, and the week-over-week movers — FINRA's weekly per-symbol ATS totals for the latest FULLY published week, ranked by ATS share volume among liquid names (the same real dollar-volume floor). Weekly data, published on FINRA's own multi-week lag (~2 weeks Tier-1 NMS, ~4 for the rest) — weeks behind the tape by regulation.

week of 2026-08-10Weeklatest FULLY published · multi-week lag

2,592Names measured$25M/day liquidity floor

12.5BATS tape (wk)shares, all stored tiers — the % of tape base


1	SPCX	103.9M	-26.8%	0.83%	1,060,122	98	+5.2%
2	INTC	86.2M	+60.5%	0.69%	798,409	108	+4.0%
3	NOK	77.2M	+32.6%	0.62%	233,449	331	+3.0%
4	NVDA	71.4M	-19.4%	0.57%	842,639	85	+0.8%
5	NU	63.9M	+71.6%	0.51%	203,501	314	-2.7%
6	SNXX	51.4M	-3.3%	0.41%	221,275	232	-1.6%
7	ONDS	51.4M	+60.4%	0.41%	172,955	297	-0.6%
8	SMCI	51.4M	+149.5%	0.41%	462,334	111	+3.4%
9	SPY	48.9M	-28.0%	0.39%	584,051	84	-0.4%
10	DRAM	43.6M	-4.0%	0.35%	326,030	134	+0.6%
11	CRWV	43.6M	+50.5%	0.35%	497,285	88	+3.0%
12	ACHR	42.4M	+172.8%	0.34%	164,488	258	-4.6%
13	PLUG	42.4M	+90.1%	0.34%	101,026	419	-1.5%
14	HTZ	40.5M	-10.5%	0.32%	92,008	440	-2.6%
15	RIG	38.9M	+48.5%	0.31%	137,308	284	-6.7%
16	MSTU	38.2M	-3.4%	0.31%	22,455	1,702	-5.4%
17	T	38.2M	-33.9%	0.31%	205,584	186	-3.2%
18	TLT	35.0M	-23.9%	0.28%	108,270	323	+0.2%
19	SOXL	34.5M	-32.4%	0.28%	638,347	54	+1.6%
20	CSCO	34.0M	+96.2%	0.27%	366,946	93	-2.1%
21	LQD	33.8M	-0.2%	0.27%	102,629	329	+0.2%
22	HYG	33.5M	-25.4%	0.27%	72,727	461	+0.1%
23	PLTR	31.5M	-49.2%	0.25%	471,075	67	+1.0%
24	PATH	31.4M	+1.7%	0.25%	150,867	208	-4.2%
25	PFE	30.9M	-23.8%	0.25%	199,815	155	-0.3%
26	OPEN	30.9M	+7.4%	0.25%	78,282	394	-2.3%
27	ORCL	30.4M	-7.9%	0.24%	392,253	78	+2.0%
28	KORU	30.2M	-33.5%	0.24%	201,595	150	-1.7%
29	ITUB	29.7M	+69.5%	0.24%	64,875	457	+0.4%
30	NBIS	29.3M	+36.5%	0.23%	464,170	63	+1.0%
31	CIFR	28.8M	-20.7%	0.23%	240,070	120	+10.8%
32	TTD	28.6M	-21.5%	0.23%	222,455	128	-3.4%
33	F	28.5M	-11.4%	0.23%	167,894	170	-1.1%
34	RKT	28.1M	-20.5%	0.23%	199,970	141	-1.8%
35	KEEL	28.1M	+58.9%	0.23%	89,453	314	+3.7%
36	AAPL	27.5M	-37.1%	0.22%	529,612	52	+0.3%
37	WULF	27.1M	-6.5%	0.22%	207,309	130	+6.2%
38	IREN	26.9M	+11.4%	0.22%	305,985	88	+2.5%
39	AMZN	26.9M	-49.4%	0.22%	442,604	61	-1.0%
40	RIOT	26.6M	+45.0%	0.21%	254,650	104	+3.3%
41	QQQ	26.5M	-36.2%	0.21%	359,634	74	0.0%
42	NFLX	25.8M	-9.8%	0.21%	294,755	87	-1.9%
43	BBD	25.5M	+0.6%	0.20%	58,158	439	0.0%
44	FRMI	25.5M	+78.1%	0.20%	132,410	193	+0.6%
45	SNAP	24.4M	-53.1%	0.20%	104,379	234	-1.9%
46	SKHY	23.9M	-23.9%	0.19%	394,767	60	0.0%
47	MU	23.8M	-16.3%	0.19%	727,745	33	-0.1%
48	VALE	23.5M	-14.3%	0.19%	92,391	255	-2.3%
49	BSX	23.5M	-0.3%	0.19%	202,230	116	+0.1%
50	MSFT	23.3M	-49.1%	0.19%	516,947	45	-1.4%

FINRA weekly per-symbol ATS ("dark pool") volume, week of 2026-08-10 — the latest FULLY published week; FINRA releases each week on its own multi-week lag (~2 weeks for Tier-1 NMS names, ~4 for the rest), so this board is weeks behind the tape by regulation, not a live feed. WoW compares the 2026-08-03 week; % of ATS tape divides each name into the week's whole stored ATS total. Volumes are magnitudes, not directional signals. Session column: settled closes as of the 2026-09-16 session — a daily vintage, not the ATS week.