XOOMAR

RADCOM LTD (RDCM)

Every FINRA and SEC series the site collects for RADCOM LTD: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq.

Download CSV

281K

Short interest

settlement 2026-08-14

1.5

Days to cover

+10.3% vs prior

41.4%

Short share of volume

2026-09-11

2

Fails to deliver

settlement 2026-08-13

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-09-11.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 14 August 2026, short interest in RDCM is 281,050 shares, down 88,989 shares over the last month. Over the last 48 readings it ranged from 2,161 shares (13 December 2024) to 370,039 shares (15 July 2026). At the reported average volume of 186K shares a day that is 1.5 days to cover.

Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/rdcm" 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
2026-08-14281,050+10.3%185,6721.51
2026-07-31254,903-31.1%199,8051.28
2026-07-15370,039+5.0%109,1033.39
2026-06-30352,333+134.1%209,5441.68
2026-06-15150,538-1.8%350,1621.00
2026-05-29153,245-3.8%209,2281.00
2026-05-15159,212-38.6%194,7361.00
2026-04-30259,303+127.5%284,5961.00
2026-04-15113,979+3.1%41,9092.72
2026-03-31110,557-3.7%52,9792.09
2026-03-13114,801-6.8%42,2722.72
2026-02-27123,198+16.6%62,1291.98
2026-02-13105,612+49.5%127,3681.00
2026-01-3070,658+1.2%84,8551.00
2026-01-1569,798-4.2%54,1901.29
2025-12-3172,844-8.1%34,5322.11
2025-12-1579,280+11.6%95,4151.00
2025-11-2871,039-0.3%58,4511.22
2025-11-1471,222-6.9%63,9981.11
2025-10-3176,524+0.8%27,7822.75
2025-10-1575,911-15.9%55,2121.37
2025-09-3090,310-3.3%51,8891.74
2025-09-1593,428+8.4%56,9791.64
2025-08-2986,181-2.4%58,8541.46

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of RDCM volume is 41.4%, down 11.1 points over the last five sessions. Over the last 52 readings it ranged from 20.4% (16 July 2026) to 82.7% (17 August 2026). The latest reading is 16.1 points below the 30-session average of 57.5%, on 50K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-1121K50K41.4%0
2026-09-1044K67K65.1%0
2026-09-0936K57K63.5%0
2026-09-0851K74K69.3%0
2026-09-0418K32K57.6%0
2026-09-0329K55K52.4%0
2026-09-0235K46K76.3%0
2026-09-0146K77K59.6%3,400
2026-08-3111K21K51.4%0
2026-08-2825K48K52.6%0
2026-08-278K18K41.1%0
2026-08-2614K25K57.9%0
2026-08-2519K45K42.6%0
2026-08-2426K44K58.3%0
2026-08-2126K49K52.8%0
2026-08-2041K52K78.3%4,348
2026-08-1940K71K56.5%1,100
2026-08-1841K58K71.3%0
2026-08-1799K120K82.7%0
2026-08-14107K150K71.6%900
2026-08-1334K71K48.4%0
2026-08-1258K97K59.4%0
2026-08-1124K44K53.8%0
2026-08-1047K82K57.3%0
2026-08-0718K33K54.4%0
2026-08-0673K128K57.0%0
2026-08-0537K76K48.0%0
2026-08-0422K46K47.5%400
2026-08-0371K139K51.2%0
2026-07-3136K82K44.3%1,499

Fails to deliver

SEC, by settlement date. JSON

As of 13 August 2026, the fails-to-deliver balance in RDCM is 2 shares, down 741 shares over the last settlement date. Over the last 22 readings it ranged from 2 shares (13 August 2026) to 14,311 shares (23 January 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-132$10.32$21
2026-08-11743$10.11$8K
2026-08-058$10.29$82
2026-08-03348$10.24$4K
2026-07-231,308$13.00$17K
2026-07-02100$14.37$1K
2026-06-301,227$13.87$17K
2026-06-264,427$12.58$56K
2026-06-231,438$12.78$18K
2026-06-221,744$12.76$22K
2026-06-091,407$12.80$18K
2026-03-31164$11.91$2K
2026-03-24200$11.17$2K
2026-03-03411$11.63$5K
2026-02-27430$11.59$5K
2026-02-24152$11.07$2K
2026-02-13535$11.49$6K
2026-02-0419$12.50$238
2026-01-2314,311$12.86$184K
2026-01-221,686$12.46$21K
2025-10-141,164$13.82$16K
2025-09-22150$14.54$2K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for RDCM in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: AMIT RAM (Chief Technology Officer) on 2026-06-01.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-06-01AMIT RAMChief Technology OfficerSell3K$15.65$47K79K
2026-05-24Totah Samin/aGrant6K$0.00$030K
2026-05-24Levit Guyn/aGrant16K$0.00$016K
2026-05-24Jacob Tomern/aGrant16K$0.00$016K
2026-05-24Aaronson Liatn/aGrant16K$0.00$016K
2026-05-20AMIT RAMChief Technology OfficerSell3K$13.95$42K82K
2026-03-19SCHWARTZ RAMIn/aGrant7K$0.00$014K

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 the rarer, stronger signal.

Planned sales (Form 144)

Newest first. JSON

10 Form 144 notices on file for RDCM worth $2.5M at the prices reported; 10 in the last 90 days worth $2.5M. Latest: Lynrock Lake Master Fund LP filed on 2026-07-28 to sell 19,623 shares ($260K) from 2026-07-28.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-07-28Lynrock Lake Master Fund LP10% Stockholder20K$260K0.117%2026-07-28Barclays
2026-07-24Lynrock Lake Master Fund LP10% Stockholder11K$146K0.066%2026-07-24Jefferies LLC
2026-07-23Lynrock Lake Master Fund LP10% Stockholder75K$981K0.451%2026-07-23Jefferies LLC
2026-07-22Lynrock Lake Master Fund LP10% Stockholder31K$415K0.184%2026-07-22Jefferies LLC
2026-07-21Lynrock Lake Master Fund LP10% Stockholder24K$327K0.144%2026-07-21Jefferies LLC
2026-07-20Lynrock Lake Master Fund LP10% Stockholder21K$287K0.123%2026-07-20Jefferies LLC
2026-07-17Lynrock Lake Master Fund LP10% Stockholder2K$26K0.012%2026-07-17Jefferies LLC
2026-07-15Lynrock Lake Master Fund LP10% Stockholder4K$58K0.025%2026-07-15Goldman Sachs & Co. LLC
2026-07-15Bennun Rachel (Heli)Former Director1K$17K0.007%2026-07-14Oppenheimer & Co. Inc.
2026-07-14Lynrock Lake Master Fund LP10% Stockholder73$1K0.000%2026-07-14Goldman Sachs & Co. LLC

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

3 holders above 5% have filed on RDCM, 3 on Schedule 13D (active intent). The largest reported stake is Lynrock Lake LP at 16.4% of the class (2,749,417 shares), filed 2026-09-09 for an event on 2026-09-01.

FiledFormHolderSharesOf classEvent
2026-09-0913D/Ano. 4Lynrock Lake LPinvestment adviser, partnership2.7M16.4%2026-09-01
2026-09-0913D/Ano. 4LYNROCK LAKE PARTNERS LLCparent holding company, other entity2.7M16.4%2026-09-01
2026-09-0913D/Ano. 4Paul Cynthiaindividual, parent holding company2.7M16.4%2026-09-01
2026-07-2713D/Ano. 3Lynrock Lake LPinvestment adviser, partnership2.4M14.6%2026-07-23
2026-07-2713D/Ano. 3LYNROCK LAKE PARTNERS LLCparent holding company, other entity2.4M14.6%2026-07-23
2026-07-2713D/Ano. 3Paul Cynthiaindividual, parent holding company2.4M14.6%2026-07-23

13F holders

Tracked managers holding RDCM at their latest 13F. JSON

6 of the 30 tracked managers held RDCM at their latest 13F, $8.9M in total at quarter-end prices. Renaissance Technologies is the largest at $3.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 2 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-30276K$3.9M0.01%+83K
ARK Investment Management2026-06-30174K$2.5M0.02%+1K
Millennium Management2026-06-3066K$929K0.00%-346
Point72 Asset Management2026-06-3051K$724K0.00%+37K
Citadel Advisors2026-06-3046K$650K0.00%+35K
Two Sigma Investments2026-06-3015K$206K0.00%-15K

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

RADCOM LTD 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 pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, 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 summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.

This page follows RADCOM LTD (RDCM), SEC CIK 1016838, listed on Nasdaq. The cross-market tables live on the short interest and insider transactions hubs.

Source and method

Short interest
FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-13.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-07-28.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GEDGAR read every 30 minutes; 13D within five business days of crossing 5%, 13G on the passive schedule. Latest 2026-09-09.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-06-01.JSON and CSV
Company record
EDGAR filing index for CIK 1016838Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 12 Sep 05:40 UTC.

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 crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short 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 RDCM is sold short?
281,050 shares were held short at the 2026-08-14 settlement, 1.5 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 RDCM's daily short volume?
On 2026-09-11, 20,593 of the 49,792 RDCM shares reported to FINRA were sold short, 41.4% of the day's reported volume. Short volume is a flow for one day, not a position.
Does RDCM have fails to deliver?
The SEC's latest file shows 2 RDCM shares failed to deliver at settlement 2026-08-13. Fails are reported per settlement date and published twice a month with a lag.
Are RDCM insiders buying or selling?
No open-market insider trades were reported for RDCM in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: AMIT RAM (Chief Technology Officer) on 2026-06-01.
Have RDCM insiders filed to sell?
10 Form 144 notices on file for RDCM worth $2.5M at the prices reported; 10 in the last 90 days worth $2.5M. Latest: Lynrock Lake Master Fund LP filed on 2026-07-28 to sell 19,623 shares ($260K) from 2026-07-28.
Who owns more than 5% of RDCM?
3 holders above 5% have filed on RDCM, 3 on Schedule 13D (active intent). The largest reported stake is Lynrock Lake LP at 16.4% of the class (2,749,417 shares), filed 2026-09-09 for an event on 2026-09-01.
Which funds hold RDCM?
6 of the 30 tracked managers held RDCM at their latest 13F, $8.9M in total at quarter-end prices. Renaissance Technologies is the largest at $3.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 2 cut.

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