Small-cap stocks on August 17, 2026: gappers, halts and filings

On August 17, 2026, these are the small-cap stocks that moved, read from the same data the replay plays: the pre-market gappers, the day's gainers, intraday runners, losers and fades, the after-hours movers, every halt, and the offerings and splits filed or in effect. A day's high runs from 4 a.m., pre-market included, to the 4 p.m. close. The biggest gapper was IPST, up 260.9% at 9:30 a.m. ET.

Pre-market gappers

The small caps up the most at 9:30 a.m. ET, the open: the price then against the previous close.

The small-cap rule: price from 2 to 20 dollars, gapped up 10% or more before the open, relative volume 5× or more, float under 20 million shares.

Symbol	Gap at 9:30 a.m.	Price	Previous close	Volume	Relative volume	Float
IPST why it ran	+260.9%	7.94	2.20	27.59 million	161228.0×	704,514
IVF why it ran	+132.6%	2.26	0.9716	34.37 million	11188.1×	2.50 million
SLE why it ran	+35.2%	3.07	2.27	6.78 million	951.2×	1.69 million
MYSZ why it ran	+32.3%	3.93	2.97	3.63 million	191.2×	558,298
XPON why it ran	+24.2%	4.52	3.64	2.46 million	1370.9×	924,887
FIEE why it ran	+16.0%	5.86	5.05	1.03 million	112.8×	2.62 million
WOK why it ran	+13.5%	2.52	2.22	322,692	22.7×	2.42 million

Play the moment: IVF at 9:21 a.m. ET

The real Level 2, time and sales and chart from 9:18 a.m. to 9:30 a.m. ET, from the same feed the replay plays. It stops at 9:21 a.m. and asks what you would do, then plays on.

Gainers

The small caps up the most from the previous close at 4:00 p.m. ET, the close.

The small-cap rule: price from 2 to 20 dollars, up 10% or more on the day, relative volume 5× or more, float under 20 million shares.

Symbol	Change at 4:00 p.m.	Last price	Previous close	Volume	Relative volume	Float
IPST why it ran	+235.0%	7.37	2.20	48.38 million	7318.5×	704,514
CDTG why it ran	+34.0%	2.80	2.09	2.31 million	10.7×	2.84 million
GRNQ why it ran	+33.1%	10.25	7.70	128,231	135.8×	1.13 million
SLE why it ran	+33.0%	3.02	2.27	9.50 million	519.7×	1.69 million
UFI why it ran	+24.5%	8.03	6.45	509,617	9.0×	16.00 million
PFSA why it ran	+23.4%	4.44	3.60	697,991	11.2×	605,374
XPON why it ran	+21.7%	4.43	3.64	3.60 million	296.4×	924,887
RPGL why it ran	+13.7%	2.16	1.90	1.65 million	54.6×	16.12 million

Intraday runners

The small caps whose high from 4:00 a.m. to 8:00 p.m. ET, pre-market and after hours included, was the furthest above the previous close, wherever they finished: a stock that spiked before the bell, during the day or after the close and gave it back is here.

The small-cap rule: the high priced from 2 to 20 dollars, a high 10% or more above the previous close, held by at least 3 one-minute bars that closed at or above that level on 100 shares or more, relative volume 5× or more, float under 20 million shares.

Symbol	High above the previous close	High to 8 p.m.	Previous close	Last price	Volume	Relative volume	Float
WFF why it ran	+643.8%	10.71	1.44	2.16	33.54 million	34.1×	41.92 million
WETO why it ran	+422.2%	42.98	8.23	35.00	16.12 million	6.9×	2.66 million
IPST why it ran	+339.1%	9.66	2.20	7.97	50.71 million	1433.5×	704,514
IVF why it ran	+221.1%	3.12	0.9716	1.73	58.66 million	1960.0×	2.50 million
PFSA why it ran	+183.1%	10.19	3.60	8.02	1.81 million	20.7×	605,374
MYSZ why it ran	+131.0%	6.86	2.97	3.20	4.70 million	129.2×	558,298
XOS why it ran	+127.7%	4.77	2.10	3.91	16.12 million	120.4×	8.66 million
TRUG why it ran	+111.4%	2.05	0.9695	1.65	23.97 million	130.5×	1.13 million
SLE why it ran	+104.8%	4.65	2.27	2.98	9.59 million	517.4×	1.69 million
JAB why it ran	+100.8%	19.90	9.91	9.86	341,396	6.3×	not available
APUS why it ran	+91.9%	8.73	4.55	4.11	1.07 million	30.6×	805,943
STFS why it ran	+78.5%	6.96	3.90	4.31	2.96 million	3.8×	1.12 million
JFU why it ran	+77.1%	3.95	2.23	2.73	3.92 million	4058.9×	5.31 million
OABI why it ran	+74.6%	5.90	3.38	3.73	10.52 million	27.7×	109.64 million
UCL why it ran	+73.0%	1.28	0.7400	0.6174	40.35 million	3447.5×	20.66 million
AIXI why it ran	+72.9%	1.43	0.8270	0.9000	6.26 million	10.8×	2.74 million
YYAI why it ran	+68.1%	1.90	1.13	1.25	5.44 million	2.8×	not available
RETO why it ran	+68.0%	2.15	1.28	1.61	4.77 million	17.3×	35.85 million
SGLY why it ran	+62.6%	8.00	4.92	6.67	1.35 million	9.0×	896,904
CDTG why it ran	+57.9%	3.30	2.09	3.08	2.37 million	8.0×	2.84 million

Losers

The small caps down the most from the previous close at 4:00 p.m. ET, the close.

The small-cap rule: price from 2 to 20 dollars, down 10% or more on the day, relative volume 5× or more, float under 20 million shares.

Symbol	Change at 4:00 p.m.	Last price	Previous close	Volume	Relative volume	Float
AIFU why it ran	−51.5%	17.60	36.30	130,186	20.4×	1.10 million
BALY	−26.1%	10.34	13.99	387,496	17.6×	11.81 million
BRNX why it ran	−17.4%	2.94	3.56	2.04 million	108.0×	720,888
APUS why it ran	−13.0%	3.96	4.55	1.06 million	35.3×	805,943

Fades

Fewer than three small caps met the rule at 4:00 p.m. ET, so there is no list.

The small-cap rule: price from 2 to 20 dollars, gapped up 10% or more and closed 10% or more below the open, relative volume 5× or more, float under 20 million shares.

After hours

The small caps that moved the most after the close, at 8:00 p.m. ET.

The small-cap rule: price from 2 to 20 dollars, moved 10% or more after the close, relative volume 5× or more, float under 20 million shares.

Symbol	After-hours change	Price	Volume	Relative volume	Float
XOS why it ran	+86.6%	3.91	16.12 million	120.4×	8.66 million
PFSA why it ran	+80.6%	8.02	1.81 million	20.7×	605,374
SGLY why it ran	+44.7%	6.67	1.35 million	9.0×	896,904
JFU why it ran	+17.2%	2.73	3.92 million	4058.9×	5.31 million
AIFU why it ran	+11.5%	19.63	131,507	20.6×	1.10 million
CDTG why it ran	+10.0%	3.08	2.37 million	8.0×	2.84 million

Why they ran

The stocks we wrote up for this day, each with its gap, float, halts, the news before the move and a chart.

Halts

Every trading halt in the exchange's feed that day, in New York time: the small caps in the lists above first, then every other stock. See LULD halts.

Halted	Symbol	Resumed	Length	Reason in the feed
9:32 a.m.	STFS	9:43 a.m.	10 min 47 s	LULD pause (limit up-limit down)
9:35 a.m.	WETO	9:45 a.m.	10 min 5 s	LULD pause (limit up-limit down)
9:47 a.m.	PFSA	9:57 a.m.	10 min 0 s	LULD pause (limit up-limit down)
9:47 a.m.	STFS	9:52 a.m.	5 min 0 s	LULD pause (limit up-limit down)
9:48 a.m.	WETO	9:53 a.m.	5 min 0 s	LULD pause (limit up-limit down)
9:50 a.m.	CDTG	9:55 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:00 a.m.	PFSA	10:10 a.m.	10 min 0 s	LULD pause (limit up-limit down)
10:05 a.m.	STFS	10:10 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:16 a.m.	PFSA	10:21 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:19 a.m.	WETO	10:24 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:22 a.m.	PFSA	10:27 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:24 a.m.	WETO	10:29 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:28 a.m.	PFSA	10:33 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:30 a.m.	WETO	10:35 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:32 a.m.	GRNQ	10:37 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:33 a.m.	WFF	10:43 a.m.	10 min 0 s	LULD pause (limit up-limit down)
10:34 a.m.	PFSA	10:39 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:43 a.m.	WFF	10:53 a.m.	10 min 0 s	LULD pause (limit up-limit down)
10:55 a.m.	WFF	11:05 a.m.	10 min 0 s	LULD pause (limit up-limit down)
11:12 a.m.	WFF	11:17 a.m.	5 min 0 s	LULD pause (limit up-limit down)
11:31 a.m.	WFF	11:41 a.m.	10 min 0 s	LULD pause (limit up-limit down)
11:46 a.m.	WFF	11:56 a.m.	10 min 0 s	LULD pause (limit up-limit down)
12:00 p.m.	WFF	12:05 p.m.	5 min 0 s	LULD pause (limit up-limit down)
1:14 p.m.	AIFU	1:19 p.m.	5 min 0 s	LULD pause (limit up-limit down)
1:22 p.m.	AIFU	1:27 p.m.	5 min 0 s	LULD pause (limit up-limit down)
1:29 p.m.	AIFU	1:34 p.m.	5 min 1 s	LULD pause (limit up-limit down)
1:31 p.m.	RETO	1:36 p.m.	5 min 0 s	LULD pause (limit up-limit down)
1:38 p.m.	AIFU	1:43 p.m.	5 min 0 s	LULD pause (limit up-limit down)
2:00 p.m.	WETO	2:10 p.m.	10 min 0 s	LULD pause (limit up-limit down)
2:02 p.m.	BRNX	2:07 p.m.	5 min 0 s	LULD pause (limit up-limit down)
2:31 p.m.	WETO	2:36 p.m.	5 min 0 s	LULD pause (limit up-limit down)

Every other halt that day: 46

Halted	Symbol	Resumed	Length	Reason in the feed
6:00 a.m.	MRCO	9:34 a.m.	214 min 59 s	No reason given in the feed
6:00 a.m.	MRCOW	9:41 a.m.	221 min 4 s	No reason given in the feed
6:00 a.m.	ADAMK	9:30 a.m.	210 min 1 s	No reason given in the feed
6:00 a.m.	FBYDP	did not resume that day		No reason given in the feed
6:00 a.m.	CGCF	9:34 a.m.	214 min 59 s	No reason given in the feed
6:55 a.m.	EYPT	7:42 a.m.	47 min 26 s	News pending
7:00 a.m.	BRBS	8:55 a.m.	114 min 23 s	News pending
7:56 a.m.	ZWZZT	10:05 a.m.	128 min 33 s	New security offering
7:56 a.m.	ZJZZT	10:00 a.m.	123 min 15 s	New security offering
8:03 a.m.	HTB	8:42 a.m.	38 min 56 s	News pending
8:54 a.m.	AVB	did not resume that day		No reason given in the feed
9:09 a.m.	FOIL	did not resume that day		Regulatory
9:30 a.m.	ZVZZT	9:48 a.m.	17 min 46 s	LULD pause (limit up-limit down)
9:30 a.m.	OBX	9:40 a.m.	10 min 2 s	LULD pause (limit up-limit down)
9:32 a.m.	NUR	9:37 a.m.	5 min 0 s	LULD pause (limit up-limit down)
9:34 a.m.	ZTG	9:44 a.m.	10 min 0 s	LULD pause (limit up-limit down)
9:39 a.m.	NNNN	9:44 a.m.	5 min 0 s	LULD pause (limit up-limit down)
9:42 a.m.	FGI	9:52 a.m.	10 min 0 s	LULD pause (limit up-limit down)
9:44 a.m.	ZTG	10:29 a.m.	45 min 1 s	LULD pause (limit up-limit down)
9:49 a.m.	WATR	9:59 a.m.	10 min 0 s	LULD pause (limit up-limit down)
9:59 a.m.	LSE	10:04 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:08 a.m.	THCH	10:13 a.m.	5 min 3 s	LULD pause (limit up-limit down)
10:09 a.m.	BUUU	10:14 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:18 a.m.	BUUU	10:23 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:24 a.m.	BUUU	10:34 a.m.	10 min 0 s	LULD pause (limit up-limit down)
10:29 a.m.	ZTG	11:04 a.m.	35 min 1 s	LULD pause (limit up-limit down)
10:35 a.m.	BUUU	10:40 a.m.	5 min 3 s	LULD pause (limit up-limit down)
10:55 a.m.	WATR	11:00 a.m.	5 min 0 s	LULD pause (limit up-limit down)
10:59 a.m.	HAO	11:09 a.m.	10 min 0 s	LULD pause (limit up-limit down)
11:05 a.m.	ZTG	11:15 a.m.	10 min 0 s	LULD pause (limit up-limit down)
11:10 a.m.	LSE	11:15 a.m.	5 min 2 s	LULD pause (limit up-limit down)
11:15 a.m.	ZTG	11:20 a.m.	5 min 0 s	LULD pause (limit up-limit down)
11:21 a.m.	ZTG	11:31 a.m.	10 min 1 s	LULD pause (limit up-limit down)
11:34 a.m.	ZTG	11:39 a.m.	5 min 0 s	LULD pause (limit up-limit down)
11:40 a.m.	ZTG	11:45 a.m.	5 min 0 s	LULD pause (limit up-limit down)
11:46 a.m.	ZTG	11:56 a.m.	10 min 0 s	LULD pause (limit up-limit down)
11:53 a.m.	CABZ	11:58 a.m.	5 min 3 s	No reason given in the feed
11:57 a.m.	ZTG	12:02 p.m.	5 min 0 s	LULD pause (limit up-limit down)
12:04 p.m.	ZTG	12:09 p.m.	5 min 0 s	LULD pause (limit up-limit down)
12:37 p.m.	ZTG	12:42 p.m.	5 min 0 s	LULD pause (limit up-limit down)
3:34 p.m.	EJH	3:39 p.m.	5 min 0 s	LULD pause (limit up-limit down)
3:53 p.m.	ZVZZT	4:00 p.m.	6 min 26 s	LULD pause (limit up-limit down)
4:21 p.m.	DRMAW	did not resume that day		Additional information requested
7:50 p.m.	CXAI	did not resume that day		News pending
7:50 p.m.	RCON	did not resume that day		News pending
7:50 p.m.	CXAIW	did not resume that day		News pending

Offerings filed

Offering filings with the SEC that day, from EDGAR, in New York time: the small caps in the lists above first, then the others. See offerings.

Filed	Symbol	Form
12:15 a.m.	WVE	EFFECT
12:15 a.m.	CNF	EFFECT
12:15 a.m.	BLZE	EFFECT
12:15 a.m.	LXRX	EFFECT
12:15 a.m.	ARTV	EFFECT
12:15 a.m.	IRD	EFFECT
12:15 a.m.	AGEN	EFFECT
6:01 a.m.	AGEN	424B3
6:25 a.m.	AMOD	424B3
7:00 a.m.	MVIS	424B5
8:00 a.m.	STKH	F-3
8:08 a.m.	TMS	424B3
9:28 a.m.	MBAI	F-1/A
11:58 a.m.	YXT	424B5
3:25 p.m.	NKLR	424B3
4:04 p.m.	BLZE	424B3
4:05 p.m.	PSEC	424B2
4:44 p.m.	LABT	424B3
4:50 p.m.	XAIR	S-3
7:35 p.m.	SEV	S-1/A
8:12 p.m.	MI	F-1

Splits that took effect

Symbol	Split	Took effect
PFSA	1-for-4 reverse split	August 17, 2026
YYAI	1-for-20 reverse split	August 17, 2026

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