ACLS

Axcelis Technologies Inc

Company with tickers: ACLS

CIK

1113232

CUSIP

054540208

Shares Outstanding

30,733,897

13F Activity (30d)

204 filings 200 filers

Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.

1M 3M 6M 1Y 5Y All

Off-Exchange Volume History

Week Start	ATS Volume	Non-ATS OTC Volume	Total Off-Exchange	% of FINRA Weekly Volume
2026-05-04	1,638,710	702,486	2,341,196	42.9%
2026-04-27	924,613	376,138	1,300,751	49.9%
2026-04-20	1,522,541	543,913	2,066,454	47.9%
2026-04-13	809,084	402,813	1,211,897	47.3%
2026-04-06	845,663	454,627	1,300,290	43.9%
2026-03-30	555,482	336,290	891,772	39.9%
2026-03-23	1,195,822	544,314	1,740,136	38.6%
2026-03-16	742,747	465,003	1,207,750	34.4%
2026-03-09	916,354	254,143	1,170,497	37.4%
2026-03-02	1,132,130	410,325	1,542,455	36.3%
2026-02-23	1,458,204	411,353	1,869,557	45.1%
2026-02-16	2,860,549	1,270,476	4,131,025	42.4%
2026-02-09	1,008,638	381,125	1,389,763	38.6%
2026-02-02	1,440,146	364,217	1,804,363	42.5%
2026-01-26	752,089	292,993	1,045,082	42.7%
2026-01-19	586,238	272,026	858,264	41.3%
2026-01-12	863,424	409,878	1,273,302	45.3%
2026-01-05	923,061	598,343	1,521,404	44.0%
2025-12-29	234,721	162,779	397,500	37.7%
2025-12-22	276,598	132,826	409,424	40.1%
2025-12-15	744,985	395,696	1,140,681	36.3%
2025-12-08	1,097,423	373,091	1,470,514	46.0%
2025-12-01	764,734	410,166	1,174,900	44.9%
2025-11-24	391,629	217,810	609,439	35.6%
2025-11-17	717,211	298,823	1,016,034	39.8%
2025-11-10	905,842	271,767	1,177,609	40.1%
2025-11-03	1,384,287	583,986	1,968,273	40.5%
2025-10-27	878,580	459,533	1,338,113	44.6%
2025-10-20	697,311	316,383	1,013,694	43.7%
2025-10-13	980,325	321,989	1,302,314	41.1%
2025-10-06	1,334,820	797,929	2,132,749	45.7%
2025-09-29	1,585,803	625,833	2,211,636	41.6%
2025-09-22	778,870	413,503	1,192,373	47.9%
2025-09-15	915,543	475,701	1,391,244	40.6%
2025-09-08	478,747	271,249	749,996	40.3%
2025-09-01	362,331	319,029	681,360	35.9%
2025-08-25	522,080	572,471	1,094,551	48.9%
2025-08-18	505,410	253,629	759,039	40.5%
2025-08-11	809,039	300,935	1,109,974	40.0%
2025-08-04	1,107,671	1,016,777	2,124,448	48.5%
2025-07-28	855,258	328,841	1,184,099	43.5%
2025-07-21	656,005	253,620	909,625	37.5%
2025-07-14	454,687	196,992	651,679	36.8%
2025-07-07	377,916	332,930	710,846	36.6%
2025-06-30	463,025	202,259	665,284	39.6%
2025-06-23	639,089	1,085,125	1,724,214	51.1%
2025-06-16	478,969	309,371	788,340	38.3%

Showing 1–47 of 47 weeks