XOOMAR
Get a free API key

Cellectar Biosciences (CLRB)

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

Download CSV

264K

Short interest

settlement 2026-10-15

1.4

Days to cover

-0.7 days vs prior

37.3%

Short share of volume

2026-11-02

800

Fails to deliver

settlement 2026-10-14

Thu 12 Nov

Next earnings

estimated date

$0

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 CLRB is 263,517 shares, up 72,389 shares over the last month. Over the last 48 readings it ranged from 22,951 shares (30 April 2026) to 3,147,408 shares (15 January 2025). The latest reading sits at the bottom of that range. At the reported average volume of 194K shares a day that is 1.4 days to cover.

Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/clrb" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
PreviewDark previewAdd ?theme=dark to the src for a dark chart.
SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-15263,517+58.5%194,3811.36
2026-09-30166,265-13.0%81,2882.05
2026-09-15191,128+14.5%41,7814.57
2026-08-31166,985+3.6%27,3026.12
2026-08-14161,197-7.8%29,8955.39
2026-07-31174,829-12.3%44,4673.93
2026-07-15199,436+2.6%118,5711.68
2026-06-30194,336+238.8%156,9631.24
2026-06-1557,356-77.8%153,0601.00
2026-05-29258,202-66.8%236,0601.09
2026-05-15777,622+3288.2%5,137,9241.00
2026-04-3022,951-15.6%21,2561.08
2026-04-1527,204-55.5%21,6861.25
2026-03-3161,202+33.4%40,2401.52
2026-03-1345,874-49.0%72,8171.00
2026-02-2789,881-23.1%20,4844.39
2026-02-13116,956-11.9%25,6284.56
2026-01-30132,731-31.2%43,6553.04
2026-01-15193,022+131.9%201,1301.00
2025-12-3183,230-21.5%82,1331.01
2025-12-15106,028-31.1%41,8922.53
2025-11-28153,807-19.0%66,8032.30
2025-11-14189,816-28.8%83,6792.27
2025-10-31266,511+71.3%466,5061.00
2025-10-15155,620+40.0%135,4191.15
2025-09-30111,135+32.1%77,5561.43
2025-09-1584,111+30.9%90,4371.00
2025-08-2964,251-31.9%139,1431.00
2025-08-1594,417-34.5%159,1051.00
2025-07-31144,127+115.4%143,2511.01
2025-07-1566,900-59.5%191,2661.00
2025-06-30164,965-92.0%144,4271.14
2025-06-132,061,526+41.9%71,037,7001.00
2025-05-301,452,424-39.2%665,3712.18
2025-05-152,389,658+52.9%758,2153.15
2025-04-301,562,797-30.9%688,6932.27
2025-04-152,263,176+1.8%716,9023.16
2025-03-312,223,625-23.9%1,009,4242.20
2025-03-142,922,794+48.6%1,971,1391.48
2025-02-281,967,439-15.8%725,4862.71
2025-02-142,336,986-0.8%1,645,1931.42
2025-01-312,355,367-25.2%1,177,3442.00
2025-01-153,147,408+67.2%3,918,8621.00
2024-12-311,882,803-32.6%3,225,1941.00
2024-12-132,793,563+114.2%6,112,0571.00
2024-11-291,304,306+12.5%750,5071.74
2024-11-151,159,784-36.8%336,1203.45
2024-10-311,835,227-6.3%215,3618.52

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of CLRB volume is 37.3%, down 13.7 points over the last five sessions. Over the last 30 readings it ranged from 7.5% (1 October 2026) to 89.4% (30 September 2026). The latest reading is 17.3 points below the 30-session average of 54.7%, on 44K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-0216K44K37.3%1
2026-10-3014K25K57.0%1,500
2026-10-2915K28K53.3%0
2026-10-2823K39K59.0%0
2026-10-2725K53K47.8%108
2026-10-2642K82K51.1%0
2026-10-2323K30K77.2%0
2026-10-2224K32K76.9%0
2026-10-2156K85K66.3%3
2026-10-2028K44K63.6%0
2026-10-1938K108K35.2%0
2026-10-16114K185K61.9%0
2026-10-1584K173K48.4%15,018
2026-10-14133K229K58.0%403
2026-10-13162K288K56.0%15,600
2026-10-1258K102K56.5%0
2026-10-0931K45K68.9%12,725
2026-10-0830K56K54.4%0
2026-10-0718K25K73.7%19
2026-10-0625K101K25.3%2,600
2026-10-0516K34K47.6%0
2026-10-027K15K44.9%0
2026-10-011K19K7.5%0
2026-09-3041K46K89.4%0
2026-09-2947K55K86.0%0
2026-09-2820K32K61.7%3,238
2026-09-2522K56K39.1%101
2026-09-249K27K35.3%329
2026-09-2320K32K63.9%0
2026-09-2231K85K36.4%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 CLRB is 800 shares, down 6,997 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (10 September 2026) to 32,868 shares (3 August 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-10-14800$1.39$1K
2026-10-137,797$1.43$11K
2026-10-082$1.52$3
2026-10-072$1.51$3
2026-09-301,280$1.82$2K
2026-09-28766$1.80$1K
2026-09-2361$2.23$136
2026-09-21701$2.38$2K
2026-09-1711$2.35$26
2026-09-161,782$2.32$4K
2026-09-156$2.31$14
2026-09-112$2.37$5
2026-09-102$2.37$5
2026-09-0212$2.46$30
2026-08-203,562$2.62$9K
2026-08-10315$2.57$810
2026-08-0332,868$2.57$84K
2026-07-3111,885$2.53$30K
2026-07-3025,403$2.48$63K
2026-07-24756$2.47$2K
2026-07-21403$2.52$1K
2026-07-173,260$2.58$8K
2026-07-163,306$2.61$9K
2026-07-141,960$2.63$5K
2026-07-135,147$2.82$15K
2026-07-10261$2.77$723
2026-07-071,894$2.77$5K
2026-07-06871$2.81$2K
2026-07-026,018$2.83$17K
2026-07-0117,280$2.78$48K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for CLRB in the last 90 days. The most recent filings are listed below. Latest filing: Longcor Jarrod (Chief Operating Officer) on 2026-05-07.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-05-07Longcor JarrodChief Operating OfficerBuy9K$2.88$25K20K
2026-05-07CARUSO JAMES VChief Executive OfficerBuy9K$2.88$25K20K
2025-12-12NEIS JOHNDirectorSell198$3.70$73210
2025-07-02Longcor JarrodChief Operating OfficerBuy10K$4.99$50K13K
2025-07-02Kolean Chad JChief Financial OfficerBuy5K$4.99$25K6K
2025-07-02CARUSO JAMES VChief Executive OfficerBuy10K$4.99$50K12K
2025-01-10Longcor JarrodChief Operating OfficerBuy30K$0.28$8K83K
2023-12-08CARUSO JAMES VPresident and CEOGrant41K$0.00$049K
2023-12-08Longcor JarrodChief Operating OfficerGrant43K$0.00$053K
2023-12-08Shustov AndreiSenior Vice President, MedicalGrant48K$0.00$055K
2023-12-08Kolean Chad JChief Financial OfficerGrant43K$0.00$043K
2023-12-08Lea Darrell ShaneChief Commercial OfficerGrant40K$0.00$040K
2021-09-14Swirsky Douglas JDirectorBuy25K$1.04$26K25K
2021-09-03DRISCOLL FREDERICK WDirectorBuy19K$1.04$20K19K
2021-03-04CARUSO JAMES VPresident and CEOBuy5K$1.70$9K86K
2020-12-28Elefant DovChief Financial OfficerBuy7K$1.35$10K12K
2020-12-28Longcor JarrodChief Business OfficerBuy30K$1.35$40K102K
2020-12-28CARUSO JAMES VPresident and CEOBuy37K$1.35$50K81K
2020-06-05CARUSO JAMES VPresident and CEOBuy22K$1.15$25K44K
2020-06-05Longcor JarrodChief Business OfficerBuy65K$1.15$75K73K
2020-06-05Elefant DovChief Financial OfficerBuy4K$1.15$5K4K
2020-06-04HILL STEPHEN ADirectorBuy18K$1.08$19K18K
2020-02-03CARUSO JAMES VPresident and CEOGrant100K$2.71$271K100K
2020-02-03Longcor JarrodChief Business OfficerGrant40K$2.71$108K40K
2020-02-03Elefant DovChief Financial OfficerGrant10K$2.71$27K10K

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

25 holders report 5% or more of CLRB in their latest filing, all on Schedule 13G (passive). The largest reported stake is BAM GP LLC at 10.0% of the class (798,382 shares), filed 2026-08-14 for an event on 2026-06-30.

FiledFormHolderSharesOf classEvent
2026-08-1413GJOHNSON DAVID EDWARDparent holding company, individual470K5.9%2026-06-30
2026-08-1413GCaligan Partners LPinvestment adviser, partnership470K5.9%2026-06-30
2026-08-1413GBAM GP LLCparent holding company, other entity798K10.0%2026-06-30
2026-08-1413GBALYASNY ASSET MANAGEMENT L.P.investment adviser, partnership798K10.0%2026-06-30
2026-08-1413GBalyasny Asset Management Holdings LPparent holding company, partnership798K10.0%2026-06-30
2026-08-1413GDames GP LLCparent holding company, other entity798K10.0%2026-06-30
2026-08-1413GDmitry Balyasnyparent holding company, individual798K10.0%2026-06-30
2026-08-1413GDevesh Gandhiindividual851K10.0%2026-06-30
2026-08-1413GSilverArc Capital Management, LLCinvestment adviser851K10.0%2026-06-30
2026-08-1413GStemPoint Capital LPinvestment adviser, partnership846K9.9%2026-06-30
2026-08-1413GStemPoint Capital Management GP LLCother entity846K9.9%2026-06-30
2026-08-1413GMichelle Rossparent holding company, individual846K9.9%2026-06-30
2026-08-1313GBleichroeder LPinvestment adviser808K10.0%2026-06-30
2026-08-1313GBleichroeder Holdings LLCparent holding company808K10.0%2026-06-30
2026-08-1313GAndrew Gundlachparent holding company808K10.0%2026-06-30
2026-08-0413GRyan M. Laneparent holding company, individual864K10.0%2026-06-30
2026-08-0413GEmpery Asset Management, LPinvestment adviser, partnership864K10.0%2026-06-30
2026-06-0513GJANUS HENDERSON GROUP PLCparent holding company798K10.0%2026-05-29
2026-05-1113GJon M. Plexicoparent holding company, individual863K9.9%2026-05-04
2026-05-1113GStonepine GP, LLCother entity863K9.9%2026-05-04
2026-05-1113GStonepine Capital, L.P.partnership863K9.9%2026-05-04
2026-05-1113GStonepine Capital Management, LLCinvestment adviser, other entity863K9.9%2026-05-04
2026-02-1013G/Ano. 9Rosalind Advisors, Inc.248K5.5%2025-12-31
2026-02-1013G/Ano. 9SALAMON STEVEN A Jindividual248K5.5%2025-12-31
2026-02-1013G/Ano. 9Aharon Gilindividual248K5.5%2025-12-31
2026-02-1013G/Ano. 9Rosalind Master Fund L.P.partnership185K4.1%2025-12-31
2026-02-1013G/Ano. 9Rosalind Opportunities Fund I L.P.partnership63K1.4%2025-12-31
2026-02-0413G/Ano. 1Hexstone Capital LLCother entity216K4.9%2025-12-31
2026-02-0413G/Ano. 1Brendan O'Neilindividual216K4.9%2025-12-31

What this page is

Cellectar 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 Cellectar Biosciences (CLRB), SEC CIK 1279704, 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 2026-08-14.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 2026-05-07.JSON and CSV
Company record
EDGAR filing index for CIK 1279704Ticker, 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 company pages

Datasets

Frequently Asked Questions

How much of CLRB is sold short?
263,517 shares were held short at the 2026-10-15 settlement, 1.4 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 CLRB's daily short volume?
On 2026-11-02, 16,374 of the 43,846 CLRB shares reported to FINRA were sold short, 37.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does CLRB have fails to deliver?
The SEC's latest file shows 800 CLRB shares failed to deliver at settlement 2026-10-14. Fails are reported per settlement date and published twice a month with a lag.
Are CLRB insiders buying or selling?
No open-market insider trades were reported for CLRB in the last 90 days. The most recent filings are listed below. Latest filing: Longcor Jarrod (Chief Operating Officer) on 2026-05-07.
Who owns 5% or more of CLRB?
25 holders report 5% or more of CLRB in their latest filing, all on Schedule 13G (passive). The largest reported stake is BAM GP LLC at 10.0% of the class (798,382 shares), filed 2026-08-14 for an event on 2026-06-30.

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