Arcadia Biosciences (RKDA)

Arcadia Biosciences on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.

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343K

Short interest

settlement 2026-10-15

1.0

Days to cover

unchanged vs prior

27.5%

Short share of volume

2026-11-02

840,555

Fails to deliver

settlement 2026-10-14

Fri 6 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 RKDA is 342,847 shares, up 333,242 shares over the last month. Over the last 48 readings it ranged from 927 shares (31 March 2026) to 411,143 shares (29 May 2026). At the reported average volume of 5.3M 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	342,847	+286.3%	5,307,777	1.00
2026-09-30	88,752	+824.0%	4,634,429	1.00
2026-09-15	9,605	-48.8%	54,883	1.00
2026-08-31	18,768	-78.8%	183,620	1.00
2026-08-14	88,674	+2437.2%	307,856	1.00
2026-07-31	3,495	-63.8%	15,605	1.00
2026-07-15	9,653	-58.6%	133,939	1.00
2026-06-30	23,325	-91.5%	95,314	1.00
2026-06-15	273,134	-33.6%	11,302,413	1.00
2026-05-29	411,143	+4427.0%	6,750,071	1.00
2026-05-15	9,082	+43.3%	41,016	1.00
2026-04-30	6,339	+297.4%	39,192	1.00
2026-04-15	1,595	+72.1%	11,378	1.00
2026-03-31	927	-96.1%	31,866	1.00
2026-03-13	23,692	+45.3%	73,206	1.00
2026-02-27	16,307	+2.9%	15,603	1.05
2026-02-13	15,855	+45.4%	14,132	1.12
2026-01-30	10,905	+18.7%	28,823	1.00
2026-01-15	9,188	-57.3%	29,690	1.00
2025-12-31	21,517	-48.7%	31,500	1.00
2025-12-15	41,927	-19.0%	11,248	3.73
2025-11-28	51,761	-45.5%	13,565	3.82
2025-11-14	94,939	-27.1%	27,661	3.43
2025-10-31	130,291	-49.2%	116,570	1.12
2025-10-15	256,487	+1870.3%	2,876,175	1.00
2025-09-30	13,018	-14.5%	5,319	2.45
2025-09-15	15,233	+41.8%	15,757	1.00
2025-08-29	10,741	-56.3%	6,771	1.59
2025-08-15	24,549	+19.0%	2,654	9.25
2025-07-31	20,623	-6.6%	5,862	3.52
2025-07-15	22,074	-4.2%	18,701	1.18
2025-06-30	23,039	+3.5%	18,057	1.28
2025-06-13	22,249	+67.2%	13,224	1.68
2025-05-30	13,304	-31.2%	14,635	1.00
2025-05-15	19,344	+58.0%	13,294	1.46
2025-04-30	12,239	-7.3%	17,589	1.00
2025-04-15	13,207	-1.1%	9,008	1.47
2025-03-31	13,356	+30.1%	4,732	2.82
2025-03-14	10,263	-17.2%	3,818	2.69
2025-02-28	12,391	-17.2%	6,052	2.05
2025-02-14	14,958	+101.7%	5,837	2.56
2025-01-31	7,417	-45.6%	11,814	1.00
2025-01-15	13,623	-68.8%	22,774	1.00
2024-12-31	43,587	-62.5%	55,101	1.00
2024-12-13	116,140	+1177.0%	7,335,992	1.00
2024-11-29	9,095	-53.6%	6,313	1.44
2024-11-15	19,621	-21.1%	16,484	1.19
2024-10-31	24,861	+42.9%	39,649	1.00

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of RKDA volume is 27.5%, up 26.5 points over the last five sessions. Over the last 30 readings it ranged from 1.1% (26 October 2026) to 71.4% (22 September 2026). The latest reading is 2.7 points above the 30-session average of 24.8%, on 151K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-11-02	42K	151K	27.5%	0
2026-10-30	37K	334K	10.9%	2,220
2026-10-29	294K	507K	58.0%	0
2026-10-28	11K	36K	31.3%	0
2026-10-27	19K	45K	42.5%	0
2026-10-26	255	24K	1.1%	152
2026-10-23	5K	117K	4.0%	34
2026-10-22	73K	305K	23.9%	0
2026-10-21	8K	27K	29.9%	0
2026-10-20	6K	88K	7.1%	1,300
2026-10-19	44K	527K	8.4%	18,986
2026-10-16	45K	288K	15.5%	4,611
2026-10-15	75K	221K	33.9%	13,951
2026-10-14	613K	2.1M	29.8%	48,144
2026-10-13	159K	559K	28.5%	1,676
2026-10-12	21K	120K	17.1%	7,746
2026-10-09	31K	224K	14.0%	6,368
2026-10-08	32K	153K	20.7%	0
2026-10-07	37K	161K	23.0%	0
2026-10-06	111K	465K	23.9%	0
2026-10-05	15K	83K	18.5%	0
2026-10-02	24K	122K	20.0%	0
2026-10-01	36K	271K	13.4%	1,400
2026-09-30	833K	2.0M	41.7%	159,750
2026-09-29	55K	460K	12.0%	252
2026-09-28	18K	64K	28.7%	9,681
2026-09-25	45K	247K	18.3%	501
2026-09-24	40K	304K	13.3%	9,071
2026-09-23	8.0M	14.5M	55.4%	539,483
2026-09-22	6K	8K	71.4%	0

Fails to deliver

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

As of 14 October 2026, the fails-to-deliver balance in RKDA is 840,555 shares, up 804,836 shares over the last settlement date. Over the last 30 readings it ranged from 28 shares (28 July 2026) to 840,555 shares (14 October 2026). The latest reading sits at the top of that range.

Settlement	Shares failed	Price	Value
2026-10-14	840,555	$0.21	$177K
2026-10-01	35,719	$0.28	$10K
2026-09-29	280	$0.31	$87
2026-09-28	466	$0.31	$144
2026-09-24	522,902	$0.43	$225K
2026-09-04	1,649	$0.47	$775
2026-09-02	2,407	$0.50	$1K
2026-08-13	822	$0.70	$575
2026-08-05	1,571	$0.65	$1K
2026-07-28	28	$0.64	$18
2026-07-27	84	$0.64	$54
2026-07-20	169	$0.67	$113
2026-07-17	252	$0.69	$174
2026-07-16	49	$0.66	$32
2026-07-15	79	$0.62	$49
2026-06-22	1,814	$0.78	$1K
2026-06-18	1,814	$0.84	$2K
2026-06-17	9,727	$0.85	$8K
2026-06-16	11,605	$0.92	$11K
2026-06-15	36,462	$1.03	$38K
2026-06-12	261,919	$1.07	$280K
2026-06-11	77	$0.90	$69
2026-06-10	769	$0.92	$707
2026-06-05	7,464	$1.03	$8K
2026-06-03	1,039	$1.01	$1K
2026-06-01	10,518	$0.96	$10K
2026-05-29	17,160	$0.96	$16K
2026-05-28	69,627	$0.93	$65K
2026-05-27	115,914	$0.91	$105K
2026-05-26	147,232	$0.92	$135K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for RKDA in the last 90 days. The most recent filings are listed below. Latest filing: Schaefer Thomas J. (Chief Executive Officer) on 2025-02-03.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2025-02-03	Schaefer Thomas J.	Chief Executive Officer	Buy	700	$2.49	$2K	3K
2025-02-03	Kawakami Mark	Chief Financial Officer	Buy	700	$2.49	$2K	3K
2024-08-01	Schaefer Thomas J.	Chief Executive Officer	Buy	700	$2.06	$1K	2K
2024-08-01	Kawakami Mark	Chief Financial Officer	Buy	700	$2.06	$1K	2K
2024-02-01	Schaefer Thomas J.	Chief Financial Officer	Buy	700	$2.06	$1K	1K
2023-08-04	Schaefer Thomas J.	Chief Financial Officer	Buy	649	$3.67	$2K	719
2023-05-30	Jacot Stanley Jr	Chief Executive Officer	Buy	5K	$4.31	$22K	5K
2023-02-01	Schaefer Thomas J.	Chief Financial Officer	Buy	700	$0.23	$161	3K
2022-08-01	Haley Pamela	Chief Financial Officer	Buy	700	$0.70	$490	5K
2020-08-03	Haley Pamela	Chief Financial Officer	Buy	700	$3.16	$2K	3K
2020-08-03	Shultz Randall	Chief Technology Officer	Buy	700	$3.16	$2K	13K
2020-08-03	Plavan Matthew T	Chief Executive Officer	Buy	585	$3.16	$2K	14K
2020-02-03	Plavan Matthew T	Chief Executive Officer	Buy	700	$1.72	$1K	14K
2020-02-03	Reiter Sarah	Chief Commercial Officer	Buy	700	$1.72	$1K	4K
2020-02-03	Haley Pamela	Chief Financial Officer	Buy	700	$1.72	$1K	2K

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

5 holders report 5% or more of RKDA in their latest filing, all on Schedule 13G (passive). The largest reported stake is MJL Manager LLC at 15.7% of the class (378,740 shares), filed 2026-09-30 for an event on 2026-09-25.

Filed	Form	Holder	Shares	Of class	Event
2026-09-30	13G	MJL Manager LLCinvestment adviser	379K	15.7%	2026-09-25
2026-09-30	13G	Michael Liuindividual	379K	15.7%	2026-09-25
2026-09-30	13G	Capuchin Capital Fund LPpartnership	379K	15.7%	2026-09-25
2026-08-14	13G/Ano. 1	Armistice Capital, LLCinvestment adviser, other entity	267K	10.0%	2026-06-30
2026-08-14	13G/Ano. 1	Steven Boydparent holding company, individual	267K	10.0%	2026-06-30

13F holders

Tracked managers holding RKDA at their latest 13F. JSON

1 of the 30 tracked managers held RKDA at their latest 13F, $16K in total at quarter-end prices. Citadel Advisors is the largest at $16K (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
Citadel Advisors	2026-06-30	24K	$16K	0.00%	new

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

Arcadia Biosciences 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 Arcadia Biosciences (RKDA), SEC CIK 1469443, listed on Nasdaq. 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 2026-10-14.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 2026-09-30.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 2025-02-03.JSON and CSV
Company record: EDGAR filing index for CIK 1469443Ticker, 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 RKDA is sold short?

342,847 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 RKDA's daily short volume?

On 2026-11-02, 41,683 of the 151,469 RKDA shares reported to FINRA were sold short, 27.5% of the day's reported volume. Short volume is a flow for one day, not a position.

Does RKDA have fails to deliver?

The SEC's latest file shows 840,555 RKDA shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.

Are RKDA insiders buying or selling?

No open-market insider trades were reported for RKDA in the last 90 days. The most recent filings are listed below. Latest filing: Schaefer Thomas J. (Chief Executive Officer) on 2025-02-03.

Who owns 5% or more of RKDA?

Which tracked 13F managers own RKDA?

1 of the 30 tracked 13F managers held RKDA shares at their latest filing, $16K in all. The largest: Ken Griffin's Citadel Advisors (24K shares, $16K).

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

Arcadia Biosciences (RKDA)

Short interest

Daily short volume

Fails to deliver

Insider trades

Large holders (13D and 13G)

13F holders

Arcadia Biosciences in the regulatory record

Source and updates

How to read it

Other company pages

Datasets

Frequently Asked Questions