American Shared Hospital Services (AMS)

American Shared Hospital Services on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as services-medical laboratories.

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Short interest

settlement 2026-10-15

1.0

Days to cover

unchanged vs prior

1.5%

Short share of volume

2026-11-02

Fails to deliver

settlement 2026-08-31

Thu 12 Nov

Next earnings

estimated date

Insider flow, 90 days

0 buys, 0 sells

As of 2026-11-02.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in AMS is 6,101 shares, up 665 shares over the last month. Over the last 48 readings it ranged from 866 shares (13 March 2026) to 177,845 shares (29 May 2026). The latest reading sits at the bottom of that range. At the reported average volume of 11K shares a day that is 1.0 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-10-15	6,101	-26.4%	10,852	1.00
2026-09-30	8,290	+52.5%	7,993	1.04
2026-09-15	5,436	-53.2%	10,354	1.00
2026-08-31	11,622	-75.2%	10,052	1.16
2026-08-14	46,765	-20.8%	19,422	2.41
2026-07-31	59,039	+11.3%	17,639	3.35
2026-07-15	53,055	-53.1%	52,793	1.00
2026-06-30	113,059	+3.4%	398,239	1.00
2026-06-15	109,340	-38.5%	179,590	1.00
2026-05-29	177,845	+50.7%	83,974	2.12
2026-05-15	118,040	+9.5%	502,035	1.00
2026-04-30	107,791	+5482.1%	297,770	1.00
2026-04-15	1,931	+7.7%	80,208	1.00
2026-03-31	1,793	+107.0%	20,623	1.00
2026-03-13	866	-77.3%	2,222	1.00
2026-02-27	3,806	-64.9%	8,355	1.00
2026-02-13	10,842	+574.7%	10,842	1.00
2026-01-30	1,607	+46.9%	7,876	1.00
2026-01-15	1,094	-92.0%	7,940	1.00
2025-12-31	13,651	+267.0%	12,022	1.14
2025-12-15	3,720	-39.4%	10,522	1.00
2025-11-28	6,135	+3.0%	9,744	1.00
2025-11-14	5,959	-54.2%	20,360	1.00
2025-10-31	13,023	+404.6%	14,036	1.00
2025-10-15	2,581	-95.9%	80,050	1.00
2025-09-30	62,982	+45.6%	128,547	1.00
2025-09-15	43,255	-14.3%	3,858	11.21
2025-08-29	50,466	+11.8%	3,313	15.23
2025-08-15	45,160	-7.4%	4,873	9.27
2025-07-31	48,761	-5.0%	4,821	10.11
2025-07-15	51,301	+13.9%	4,543	11.29
2025-06-30	45,053	+16.2%	29,779	1.51
2025-06-13	38,761	-7.0%	7,785	4.98
2025-05-30	41,676	-27.8%	14,514	2.87
2025-05-15	57,692	+3.6%	12,663	4.56
2025-04-30	55,663	+17.7%	5,909	9.42
2025-04-15	47,308	+10.9%	26,466	1.79
2025-03-31	42,652	-2.4%	5,358	7.96
2025-03-14	43,718	+75.4%	52,958	1.00
2025-02-28	24,921	-5.5%	6,232	4.00
2025-02-14	26,386	-11.0%	3,952	6.68
2025-01-31	29,648	+1.4%	7,163	4.14
2025-01-15	29,238	-1.4%	11,500	2.54
2024-12-31	29,664	-40.3%	13,089	2.27
2024-12-13	49,681	+46.2%	16,021	3.10
2024-11-29	33,981	+127.3%	19,476	1.74
2024-11-15	14,948	-51.5%	34,143	1.00
2024-10-31	30,842	-7.4%	10,205	3.02

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of AMS volume is 1.5%, down 6.0 points over the last five sessions. Over the last 30 readings it ranged from 1.5% (2 November 2026) to 91.1% (1 October 2026). The latest reading sits at the bottom of that range. The latest reading is 34.9 points below the 30-session average of 36.4%, on 7K shares reported.

Date	Short volume	Total volume	Short share
2026-11-02	102	7K	1.5%
2026-10-30	41	1K	3.9%
2026-10-29	148	316	46.8%
2026-10-28	129	2K	6.8%
2026-10-27	2K	7K	29.0%
2026-10-23	139	2K	7.4%
2026-10-22	5K	5K	89.2%
2026-10-21	7K	13K	52.5%
2026-10-20	104	996	10.4%
2026-10-19	3K	6K	53.6%
2026-10-16	7K	17K	39.3%
2026-10-15	707	2K	32.2%
2026-10-14	1K	13K	8.7%
2026-10-13	168	2K	11.1%
2026-10-12	543	3K	21.5%
2026-10-09	5K	13K	38.6%
2026-10-08	491	2K	27.1%
2026-10-07	9K	15K	60.9%
2026-10-06	2K	2K	79.4%
2026-10-05	4K	8K	45.7%
2026-10-02	430	2K	24.2%
2026-10-01	3K	3K	91.1%
2026-09-30	5K	10K	50.3%
2026-09-29	487	553	88.1%
2026-09-28	5K	6K	83.0%
2026-09-25	1K	12K	11.4%
2026-09-24	1K	6K	17.3%
2026-09-23	314	5K	6.5%
2026-09-22	271	790	34.3%
2026-09-21	195	1K	19.1%

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 31 August 2026, the fails-to-deliver balance in AMS is 1 share, down 20 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (31 August 2026) to 45,968 shares (3 June 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-08-31	1	$1.47	$1
2026-07-16	21	$1.45	$30
2026-07-15	11	$1.39	$15
2026-07-14	3	$1.48	$4
2026-07-01	8	$1.58	$13
2026-06-29	259	$1.61	$417
2026-06-26	6,159	$1.59	$10K
2026-06-24	2,495	$1.47	$4K
2026-06-23	4,442	$1.42	$6K
2026-06-22	4,442	$1.46	$6K
2026-06-17	4,060	$1.45	$6K
2026-06-16	7,324	$1.44	$11K
2026-06-15	7,324	$1.42	$10K
2026-06-05	43,213	$1.38	$60K
2026-06-04	45,519	$1.37	$62K
2026-06-03	45,968	$1.35	$62K
2026-06-01	51	$1.46	$74
2026-05-29	8,446	$1.64	$14K
2026-05-08	811	$2.01	$2K
2026-05-07	1,737	$1.81	$3K
2026-05-06	1,390	$1.75	$2K
2026-04-22	89	$1.37	$122
2026-04-20	976	$1.58	$2K
2026-04-17	13,192	$1.50	$20K
2026-02-10	84	$2.16	$181
2025-12-29	101	$2.14	$216
2025-12-15	659	$2.15	$1K
2025-10-24	83	$2.28	$189
2025-10-17	1,499	$2.27	$3K
2025-10-14	1,000	$2.34	$2K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for AMS in the last 90 days. The most recent filings are listed below. Latest filing: Stachowiak Raymond C (Executive Chairman) on 2026-06-22.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-06-22	Stachowiak Raymond C	Executive Chairman	Buy	586K	$2.28	$1.3M	586K
2026-03-26	Stachowiak Raymond C	Executive Chairman	Grant	100K	$0.00	$0	775K
2025-06-26	Stachowiak Raymond C	Executive Chairman	Grant	110K	$0.00	$0	665K
2025-04-30	Tagawa Craig Kenji	President	Grant	6K	$0.00	$0	36K
2024-12-19	Frech Raymond Scott	Chief Financial Officer	Grant	50K	$0.00	$0	50K
2024-10-14	Delanois Gary	Chief Operating Officer	Grant	120K	$0.00	$0	120K
2024-03-22	Stachowiak Raymond C	Executive Chairman	Grant	120K	$0.00	$0	555K
2023-03-28	Stachowiak Raymond C	Executive Chairman	Grant	120K	$0.00	$0	536K
2023-03-07	Tagawa Craig Kenji	President, CFO	Grant	11K	$0.00	$0	30K
2022-05-31	Stachowiak Raymond C	CEO	Exercise or conversion	2K	$2.70	$5K	416K
2022-04-01	Tagawa Craig Kenji	President/COO/CFO	Grant	6K	$0.00	$0	19K
2022-04-01	Bates Ernest Robert	Sr.VP Sales and Business Devel	Grant	801	$0.00	$0	27K
2022-01-03	Stachowiak Raymond C	CEO	Grant	120K	$0.00	$0	414K
2021-12-28	Miles Kathleen	Director	Grant	3K	$0.00	$0	3K
2021-12-28	Wilson Vicki L	Director	Grant	3K	$0.00	$0	3K
2021-07-01	Stachowiak Raymond C	CEO	Grant	60K	$2.94	$176K	294K
2021-06-25	Ozyurek Saim Mert	Director	Grant	1K	$0.00	$0	64K
2021-06-25	Lawrence Sandra AJ	Director	Grant	1K	$0.00	$0	38K
2021-06-25	Kelly Daniel G Jr	Director	Grant	1K	$0.00	$0	50K
2021-06-25	Larson David	Director	Grant	1K	$0.00	$0	90K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$2.43	$5K	90K
2021-06-04	Larson David	Director	Exercise or conversion	8K	$2.82	$21K	95K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$2.70	$5K	89K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$2.25	$5K	89K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$3.03	$6K	88K
2021-06-04	Larson David	Director	Tax withholding	1K	$3.13	$5K	87K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.13	$5K	87K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.13	$5K	88K
2021-06-04	Larson David	Director	Tax withholding	7K	$3.13	$21K	88K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.13	$6K	87K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$2.68	$5K	89K
2021-06-04	Larson David	Director	Exercise or conversion	8K	$2.82	$21K	93K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.13	$5K	89K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.03	$5K	87K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.03	$6K	87K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.03	$5K	89K
2021-06-04	Larson David	Director	Tax withholding	7K	$3.03	$20K	88K
2021-06-04	Larson David	Director	Exercise or conversion	8K	$3.03	$23K	95K
2021-06-04	Larson David	Director	Tax withholding	2K	$3.03	$5K	88K
2021-06-04	Larson David	Director	Tax withholding	1K	$3.03	$4K	87K
2021-06-04	Larson David	Director	Exercise or conversion	2K	$3.03	$6K	89K
2021-06-03	Stachowiak Raymond C	CEO	Exercise or conversion	2K	$2.43	$5K	234K
2021-06-03	Ozyurek Saim Mert	Director	Tax withholding	2K	$3.08	$5K	63K
2021-06-03	Ozyurek Saim Mert	Director	Exercise or conversion	2K	$2.43	$5K	65K
2021-02-01	Stachowiak Raymond C	CEO	Grant	60K	$2.55	$153K	238K
2021-01-04	Larson David	Director	Grant	12K	$2.17	$25K	86K
2021-01-04	Kelly Daniel G Jr	Director	Grant	12K	$2.17	$25K	49K
2021-01-04	Lawrence Sandra AJ	Director	Grant	12K	$2.17	$25K	37K
2020-12-04	Stachowiak Raymond C	CEO	Grant	10K	$0.00	$0	178K
2020-11-04	Stachowiak Raymond C	CEO	Grant	10K	$0.00	$0	168K
2020-10-04	Stachowiak Raymond C	Interim President and CEO	Grant	10K	$0.00	$0	158K
2020-09-04	Stachowiak Raymond C	Interim President & CEO	Grant	10K	$0.00	$0	148K
2020-08-04	Stachowiak Raymond C	Interim President & CEO	Grant	10K	$0.00	$0	138K
2020-07-02	Bates Ernest Robert	Vice President	Grant	10K	$0.00	$0	27K
2020-06-26	Lawrence Sandra AJ	Director	Grant	500	$0.00	$0	26K
2020-06-26	Larson David	Director	Grant	500	$1.88	$940	75K
2020-06-26	Kelly Daniel G Jr	Director	Grant	500	$0.00	$0	37K
2020-06-26	Ozyurek Saim Mert	Director	Grant	500	$0.00	$0	63K
2020-05-04	Stachowiak Raymond C	CEO	Returned to company	6K	$0.00	$0	232K
2020-05-04	Stachowiak Raymond C	Interim President & CEO	Grant	50K	$0.00	$0	128K
2020-01-02	Lawrence Sandra AJ	Director	Grant	8K	$0.00	$0	25K
2020-01-02	Stachowiak Raymond C	Director,TenPercentOwner	Grant	8K	$0.00	$0	78K
2020-01-02	Larson David	Director	Grant	8K	$0.00	$0	74K
2020-01-02	Kelly Daniel G Jr	Director	Grant	8K	$0.00	$0	37K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

4 holders report 5% or more of AMS in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Stachowiak Raymond C at 35.3% of the class (2,440,205 shares), filed 2026-07-30 for an event on 2026-07-22.

Filed	Form	Holder	Shares	Of class	Event
2026-07-30	13D/Ano. 10	Stachowiak Raymond Cindividual, other entity	2.4M	35.3%	2026-07-22
2026-07-30	13D/Ano. 10	RCS/TIG Holdings LLCother entity	806K	11.8%	2026-07-22
2026-07-30	13D/Ano. 10	Stachowiak Equity Fund, LLCother entity	761K	11.5%	2026-07-22
2026-07-30	13D/Ano. 10	RCS Investments, Inc.corporation	753K	11.4%	2026-07-22
2026-06-23	13D/Ano. 3	Anita G. Zuckerindividual	0	0.0%	2026-06-22
2026-06-23	13D/Ano. 3	TIGH II, LLCother entity	0	0.0%	2026-06-22
2025-12-16	13D/Ano. 5	RUFFLE JOHN Findividual	0	0.0%	2025-09-29

13F holders

Tracked managers holding AMS at their latest 13F. JSON

1 of the 30 tracked managers held AMS at their latest 13F, $91K in total at quarter-end prices. Renaissance Technologies is the largest at $91K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
Renaissance Technologies	2026-06-30	58K	$91K	0.00%	+8K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

American Shared Hospital Services in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows American Shared Hospital Services (AMS), SEC CIK 744825, listed on NYSE, classified by the SEC as services-medical laboratories. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest: FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
Daily short volume: FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-08-31.JSON and CSV
Large holders: SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-07-30.JSON and CSV
13F holders: SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates: SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-13.JSON and CSV
Insider trades: SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-06-22.JSON and CSV
Company record: EDGAR filing index for CIK 744825Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits: 10 requests a minute without a key, 30 with a free key from a free account.

How to read it

Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as services-medical laboratories

Other company pages

Datasets

Frequently Asked Questions

How much of AMS is sold short?

6,101 shares were held short at the 2026-10-15 settlement, 1.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.

What is AMS's daily short volume?

On 2026-11-02, 102 of the 6,974 AMS shares reported to FINRA were sold short, 1.5% of the day's reported volume. Short volume is a flow for one day, not a position.

Does AMS have fails to deliver?

The SEC's latest file shows 1 AMS shares failed to deliver at settlement 2026-08-31. Fails are reported per settlement date and published twice a month with a lag.

Are AMS insiders buying or selling?

No open-market insider trades were reported for AMS in the last 90 days. The most recent filings are listed below. Latest filing: Stachowiak Raymond C (Executive Chairman) on 2026-06-22.

Who owns 5% or more of AMS?

Which tracked 13F managers own AMS?

1 of the 30 tracked 13F managers held AMS shares at their latest filing, $91K in all. The largest: Renaissance Technologies (58K shares, $91K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.