Allurion Technologies (ALUR)

Allurion Technologies on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, earnings dates and insider trades. Listed on OTC.

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Short interest

settlement 2026-10-15

1.0

Days to cover

unchanged vs prior

45.5%

Short share of volume

2026-03-06

1,230

Fails to deliver

settlement 2026-05-08

Wed 11 Nov

Next earnings

estimated date

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-15.

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 ALUR is 1,183 shares, down 5 shares over the last month. Over the last 48 readings it ranged from 1,183 shares (31 August 2026) to 1,168,065 shares (31 December 2024). The latest reading sits at the bottom of that range. At the reported average volume of 10K 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	1,183	-21.4%	10,230	1.00
2026-09-30	1,505	+26.7%	2,868	1.00
2026-09-15	1,188	+0.4%	5,330	1.00
2026-08-31	1,183	-37.2%	7,409	1.00
2026-06-15	62,043	-11.3%	60,232	1.03
2026-05-29	69,916	-12.9%	74,365	1.00
2026-05-15	80,298	-4.3%	114,433	1.00
2026-04-30	83,880	-19.4%	47,434	1.77
2026-04-15	104,007	-59.1%	110,388	1.00
2026-03-31	254,092	-20.9%	194,641	1.31
2026-03-13	321,247	-69.8%	835,696	1.00
2026-02-27	1,065,645	+124.0%	17,038,131	1.00
2026-02-13	475,725	+7.6%	99,813	4.77
2026-01-30	442,077	-9.8%	105,529	4.19
2026-01-15	490,087	+10.4%	114,299	4.29
2025-12-31	444,091	-0.1%	55,269	8.04
2025-12-15	444,734	-19.1%	57,957	7.67
2025-11-28	549,490	+23.2%	190,247	2.89
2025-11-14	445,979	+200.4%	823,902	1.00
2025-10-31	148,469	+40.1%	39,642	3.75
2025-10-15	105,986	+9.5%	63,207	1.68
2025-09-30	96,814	-8.8%	44,112	2.19
2025-09-15	106,163	+0.4%	30,850	3.44
2025-08-29	105,787	+25.3%	71,257	1.48
2025-08-15	84,448	-29.2%	65,500	1.29
2025-07-31	119,267	-52.4%	83,508	1.43
2025-07-15	250,620	+38.0%	335,601	1.00
2025-06-30	181,601	-27.4%	63,168	2.87
2025-06-13	250,156	-46.0%	86,306	2.90
2025-05-30	463,467	-42.4%	525,916	1.00
2025-05-15	804,891	+456.6%	1,065,743	1.00
2025-04-30	144,595	-18.7%	48,839	2.96
2025-04-15	177,937	-64.1%	122,249	1.46
2025-03-31	495,153	+209.4%	7,431,988	1.00
2025-03-14	160,029	+27.4%	107,844	1.48
2025-02-28	125,655	-34.0%	515,394	1.00
2025-02-14	190,514	-46.8%	247,479	1.00
2025-01-31	357,907	+336.0%	7,395,005	1.00
2025-01-15	82,096	-93.0%	154,202	1.00
2024-12-31	1,168,065	+10.7%	661,328	1.77
2024-12-13	1,055,628	-1.5%	873,390	1.21
2024-11-29	1,071,758	+17.8%	867,145	1.24
2024-11-15	909,638	+35.6%	342,718	2.65
2024-10-31	671,024	+2.7%	112,844	5.95
2024-10-15	653,634	+0.6%	164,294	3.98
2024-09-30	649,834	-2.5%	114,123	5.69
2024-09-13	666,361	+16.6%	407,784	1.63
2024-08-30	571,391	+8.6%	157,949	3.62

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 6 March 2026, the short share of ALUR volume is 45.5%, down 3.9 points over the last five sessions. Over the last 30 readings it ranged from 25.2% (4 March 2026) to 75.1% (4 February 2026). The latest reading is 2.2 points below the 30-session average of 47.7%, on 142K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-03-06	64K	142K	45.5%	1,529
2026-03-05	81K	272K	29.8%	9,406
2026-03-04	67K	267K	25.2%	8,832
2026-03-03	173K	601K	28.8%	61,993
2026-03-02	635K	2.1M	30.3%	102,356
2026-02-27	268K	542K	49.4%	15,412
2026-02-26	278K	637K	43.6%	43,642
2026-02-25	579K	1.3M	44.8%	46,400
2026-02-24	3.6M	5.7M	63.3%	356,999
2026-02-23	41.3M	71.5M	57.8%	359,337
2026-02-20	12K	27K	44.7%	0
2026-02-19	5K	15K	32.0%	0
2026-02-18	7K	11K	63.7%	0
2026-02-17	14K	30K	48.5%	0
2026-02-13	7K	21K	35.3%	0
2026-02-12	8K	26K	29.6%	0
2026-02-11	20K	32K	60.7%	0
2026-02-10	24K	35K	68.1%	0
2026-02-09	15K	23K	64.8%	0
2026-02-06	22K	46K	46.8%	1,236
2026-02-05	22K	71K	30.3%	3,647
2026-02-04	107K	143K	75.1%	22,143
2026-02-03	24K	40K	58.7%	73
2026-02-02	48K	94K	51.5%	6,100
2026-01-30	12K	30K	38.9%	0
2026-01-29	12K	36K	34.6%	0
2026-01-28	5K	18K	30.8%	0
2026-01-27	25K	45K	54.9%	8,436
2026-01-26	76K	106K	71.9%	9,184
2026-01-23	52K	73K	71.6%	9,920

Fails to deliver

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

As of 8 May 2026, the fails-to-deliver balance in ALUR is 1,230 shares, unchanged over the last settlement date. Over the last 30 readings it ranged from 5 shares (19 March 2026) to 2,380,250 shares (24 February 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-05-08	1,230	$0.68	$836
2026-05-07	1,230	$0.68	$836
2026-04-27	1,727	$0.75	$1K
2026-04-24	2,250	$0.77	$2K
2026-04-17	562	$0.77	$433
2026-04-16	614	$0.80	$491
2026-04-06	3,751	$0.88	$3K
2026-04-02	2,677	$0.71	$2K
2026-03-27	4,656	$0.82	$4K
2026-03-26	10	$0.75	$8
2026-03-20	91	$0.80	$73
2026-03-19	5	$0.75	$4
2026-03-18	12	$0.60	$7
2026-03-12	92,690	$0.26	$24K
2026-03-11	22,902	$0.30	$7K
2026-03-10	12,913	$0.39	$5K
2026-03-06	4,705	$0.71	$3K
2026-03-05	117	$0.76	$89
2026-03-03	2,811	$0.70	$2K
2026-03-02	68,474	$1.17	$80K
2026-02-27	42,041	$1.25	$53K
2026-02-26	374,553	$1.23	$461K
2026-02-25	2,199,641	$1.36	$3.0M
2026-02-24	2,380,250	$1.75	$4.2M
2026-02-23	4,615	$1.09	$5K
2026-02-18	145	$1.08	$157
2026-02-13	225	$1.06	$239
2026-02-12	215	$1.10	$237
2026-02-11	2,671	$1.12	$3K
2026-02-10	247	$1.08	$267

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for ALUR in the last 90 days. The most recent filings are listed below. Latest filing: RTW INVESTMENTS, LP (10% owner) on 2026-07-21.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-07-21	RTW INVESTMENTS, LP	10% owner	Other transaction	2K	price not stated in the filing	not stated	0
2026-07-21	RTW INVESTMENTS, LP	10% owner	Other transaction	20K	price not stated in the filing	not stated	0
2026-07-21	RTW INVESTMENTS, LP	10% owner	Other transaction	162K	price not stated in the filing	not stated	0
2026-07-21	RTW INVESTMENTS, LP	10% owner	Other transaction	209K	price not stated in the filing	not stated	0
2025-12-04	Davin Michael R	Director	Sell	2K	$1.58	$3K	0
2025-12-03	Davin Michael R	Director	Sell	2K	$1.48	$2K	2K
2025-11-26	Davin Michael R	Director	Gift	3K	$0.00	$0	3K
2025-11-26	Davin Michael R	Director	Gift	3K	$0.00	$0	1K
2025-11-12	WONG RODERICK	Director,TenPercentOwner	Grant	992K	$1.67	$1.7M	3.1M
2025-11-12	WONG RODERICK	Director,TenPercentOwner	Grant	768K	$1.67	$1.3M	2.4M
2025-11-12	WONG RODERICK	Director,TenPercentOwner	Grant	97K	$1.67	$162K	299K
2025-11-12	RTW INVESTMENTS, LP	Director, 10% owner	Grant	97K	$1.67	$162K	299K
2025-11-12	RTW INVESTMENTS, LP	Director, 10% owner	Grant	768K	$1.67	$1.3M	2.4M
2025-11-12	RTW INVESTMENTS, LP	Director, 10% owner	Grant	992K	$1.67	$1.7M	3.1M
2025-11-05	RTW Innovation Master Fund Ltd.	Director,TenPercentOwner	Conversion	38K	$3.35	$127K	202K
2025-11-05	RTW Innovation Master Fund Ltd.	Director,TenPercentOwner	Conversion	632K	$3.35	$2.1M	1.7M
2025-11-05	RTW Innovation Master Fund Ltd.	Director,TenPercentOwner	Conversion	823K	$3.35	$2.8M	2.1M
2025-11-05	RTW INVESTMENTS, LP	Director, 10% owner	Conversion	38K	$3.35	$127K	202K
2025-11-05	RTW INVESTMENTS, LP	Director, 10% owner	Conversion	632K	$3.35	$2.1M	1.7M
2025-11-05	RTW INVESTMENTS, LP	Director, 10% owner	Conversion	823K	$3.35	$2.8M	2.1M
2025-10-03	Davin Michael R	Director	Gift	604	$0.00	$0	604
2025-10-03	Davin Michael R	Director	Gift	604	$0.00	$0	4K
2025-05-19	Gaur Shantanu	Chief Executive Officer	Buy	8K	$3.06	$24K	16K
2025-04-16	WONG RODERICK	Director,TenPercentOwner	Conversion	632K	$3.35	$2.1M	1.0M
2025-04-16	WONG RODERICK	Director,TenPercentOwner	Conversion	38K	$3.35	$127K	164K
2025-04-16	WONG RODERICK	Director,TenPercentOwner	Conversion	823K	$3.35	$2.8M	1.3M
2025-03-28	Gaur Shantanu	Chief Executive Officer	Buy	8K	$3.35	$27K	8K
2024-11-08	Johns Keith B II	Director	Grant	326K	$0.00	$0	326K
2024-11-08	Buch Ojas	Chief Operating Officer	Grant	307K	$0.00	$0	307K
2024-11-08	Gibbons Brendan M.	Chief Legal Officer	Grant	307K	$0.00	$0	307K
2024-03-11	Alberti-Perez Milena	Director	Grant	75K	$0.00	$0	75K
2023-12-12	Chardon Benoit	Chief Commercial Officer	Exercise or conversion	24K	$1.17	$28K	155K
2023-12-12	Chardon Benoit	Chief Commercial Officer	Exercise or conversion	19K	$1.88	$35K	199K
2023-12-12	Chardon Benoit	Chief Commercial Officer	Exercise or conversion	98K	$1.13	$111K	131K
2023-12-12	Chardon Benoit	Chief Commercial Officer	Exercise or conversion	25K	$0.95	$24K	180K
2023-10-23	Hudson Larson Douglas	Director	Grant	45K	$0.00	$0	45K
2023-10-23	Gupta Krishna K.	Director,TenPercentOwner	Grant	45K	$0.00	$0	1.4M
2023-10-23	LEWIN NICHOLAS SHERIDAN	Director	Grant	45K	$0.00	$0	45K
2023-10-23	Davin Michael R	Director	Grant	45K	$0.00	$0	110K
2023-10-23	ISHRAK OMAR	Director	Grant	45K	$0.00	$0	45K

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.

Planned sales (Form 144)

Newest first. JSON

1 Form 144 notice on file for ALUR worth $4K at the prices reported; 0 in the last 90 days worth $0. Latest: Davin Michael R filed on 2025-12-02 to sell 3,212 shares ($4K) from 2025-12-02.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2025-12-02	Davin Michael RDirector	3K	$4K	0.035%	2025-12-02	Fidelity Brokerage Services LLC

Large holders (13D and 13G)

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

4 holders report 5% or more of ALUR in their latest filing, all on Schedule 13D (active intent). The largest reported stake is RTW Master Fund, Ltd. at 21.0% of the class (3,138,798 shares), filed 2026-03-02 for an event on 2026-02-26.

Filed	Form	Holder	Shares	Of class	Event
2026-09-02	13D/Ano. 13	Roderick Wongparent holding company, individual	67K	9.9%	2026-08-31
2026-09-02	13D/Ano. 13	RTW Investments, LPinvestment adviser, partnership	67K	9.9%	2026-08-31
2026-03-02	13D/Ano. 11	RTW Master Fund, Ltd.corporation	3.1M	21.0%	2026-02-26
2026-03-02	13D/Ano. 11	RTW Innovation Master Fund, Ltd.corporation	2.4M	16.2%	2026-02-26

What this page is

Allurion Technologies 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 Allurion Technologies (ALUR), SEC CIK 1964979, listed on OTC. 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 2026-03-06.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-05-08.JSON and CSV
Planned sales: SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2025-12-02.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 2026-09-02.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 2026-01-12.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 2026-07-21.JSON and CSV
Company record: EDGAR filing index for CIK 1964979Ticker, 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.

Datasets

Frequently Asked Questions

How much of ALUR is sold short?

1,183 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 ALUR's daily short volume?

On 2026-03-06, 64,365 of the 141,623 ALUR shares reported to FINRA were sold short, 45.5% of the day's reported volume. Short volume is a flow for one day, not a position.

Does ALUR have fails to deliver?

The SEC's latest file shows 1,230 ALUR shares failed to deliver at settlement 2026-05-08. Fails are reported per settlement date and published twice a month with a lag.

Are ALUR insiders buying or selling?

No open-market insider trades were reported for ALUR in the last 90 days. The most recent filings are listed below. Latest filing: RTW INVESTMENTS, LP (10% owner) on 2026-07-21.

Have ALUR insiders filed to sell?

1 Form 144 notice on file for ALUR worth $4K at the prices reported; 0 in the last 90 days worth $0. Latest: Davin Michael R filed on 2025-12-02 to sell 3,212 shares ($4K) from 2025-12-02.

Who owns 5% or more of ALUR?

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

Allurion Technologies (ALUR)

Short interest

Daily short volume

Fails to deliver

Insider trades

Planned sales (Form 144)

Large holders (13D and 13G)

Allurion Technologies in the regulatory record

Source and updates

How to read it

Other company pages

Datasets

Frequently Asked Questions