XOOMAR
Get a free API key

Protalix BioTherapeutics (PLX)

Protalix BioTherapeutics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE.

Download CSV

3.0M

Short interest

settlement 2026-09-30

4.3

Days to cover

+0.5 days vs prior

55.9%

Short share of volume

2026-10-23

2,533

Fails to deliver

settlement 2026-09-24

Thu 12 Nov

Next earnings

estimated date

$0

Insider flow, 90 days

0 buys, 0 sells

As of 2026-10-23.

Short interest

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

As of 30 September 2026, short interest in PLX is 3,040,042 shares, down 125,103 shares over the last month. Over the last 48 readings it ranged from 650,638 shares (14 March 2025) to 5,055,741 shares (30 April 2026). At the reported average volume of 709K shares a day that is 4.3 days to cover.

Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/plx" 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
2026-09-303,040,042+5.6%709,0694.29
2026-09-152,877,740-9.1%754,1463.82
2026-08-313,165,145-11.5%666,4064.75
2026-08-143,576,201-7.8%964,1143.71
2026-07-313,878,764+4.4%520,0667.46
2026-07-153,715,907+4.4%566,4136.56
2026-06-303,558,923-9.0%851,4384.18
2026-06-153,910,669-0.6%552,8627.07
2026-05-293,935,161-6.0%798,5784.93
2026-05-154,183,989-17.2%1,074,2123.89
2026-04-305,055,741+7.0%518,8659.74
2026-04-154,726,273+0.5%710,8426.65
2026-03-314,702,042+7.4%1,203,2033.91
2026-03-134,378,823+4.9%974,1444.50
2026-02-274,174,736-7.8%1,507,6962.77
2026-02-134,527,493+10.0%2,191,8842.07
2026-01-304,116,458-9.5%894,8894.60
2026-01-154,550,338+8.0%1,049,8064.33
2025-12-314,211,881-4.6%622,0566.77
2025-12-154,416,360+6.2%516,6548.55
2025-11-284,156,781+1.4%507,8988.18
2025-11-144,100,254-1.4%625,8006.55
2025-10-314,156,466-11.7%1,147,5233.62
2025-10-154,704,650+13.3%1,014,3224.64
2025-09-304,152,594+13.4%682,5076.08
2025-09-153,661,372+1.8%824,4974.44
2025-08-293,596,098-4.4%586,5146.13
2025-08-153,761,613+3.6%565,6266.65
2025-07-313,631,108+9.0%546,4666.64
2025-07-153,330,384+1.8%678,0804.91
2025-06-303,270,635+175.4%1,932,3541.69
2025-06-131,187,764+24.2%540,3172.20
2025-05-30956,150-2.4%824,9121.16
2025-05-15979,395-1.6%1,871,3721.00
2025-04-30995,483+34.5%845,6261.18
2025-04-15740,272-24.4%662,5391.12
2025-03-31979,388+50.5%785,5831.25
2025-03-14650,638-87.1%774,4971.00
2025-02-285,054,042+5.6%577,2308.76
2025-02-144,787,415+11.4%729,3186.56
2025-01-314,297,897+7.6%572,9617.50
2025-01-153,993,527+23.6%792,3285.04
2024-12-313,230,814+0.5%346,7109.32
2024-12-133,216,185+0.0%438,6577.33
2024-11-293,215,154+1.2%586,0995.49
2024-11-153,177,594+2.6%440,5137.21
2024-10-313,097,650+0.0%142,90221.68
2024-10-153,096,973-0.9%119,14725.99

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 23 October 2026, the short share of PLX volume is 55.9%, down 22.9 points over the last five sessions. Over the last 30 readings it ranged from 15.7% (29 September 2026) to 78.8% (16 October 2026). The latest reading is 11.2 points above the 30-session average of 44.7%, on 146K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-2382K146K55.9%0
2026-10-22119K165K72.0%2,000
2026-10-21137K218K63.0%0
2026-10-20147K257K57.4%0
2026-10-19277K447K62.0%0
2026-10-16343K435K78.8%1,600
2026-10-15219K420K52.2%0
2026-10-14405K617K65.6%0
2026-10-13116K442K26.1%500
2026-10-12115K331K34.7%0
2026-10-09149K656K22.8%4,056
2026-10-08257K363K70.9%132
2026-10-07128K317K40.4%51
2026-10-06197K476K41.4%0
2026-10-05187K360K52.1%0
2026-10-02155K376K41.3%0
2026-10-01203K665K30.6%2,007
2026-09-30106K282K37.5%100
2026-09-2963K401K15.7%180
2026-09-28148K341K43.5%0
2026-09-2597K193K50.4%0
2026-09-2453K124K42.9%0
2026-09-23109K314K34.8%0
2026-09-22111K434K25.6%0
2026-09-2184K231K36.2%345
2026-09-1853K176K29.8%800
2026-09-1772K125K57.4%0
2026-09-16139K414K33.6%0
2026-09-1588K202K43.4%0
2026-09-1490K393K22.9%0

Fails to deliver

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

As of 24 September 2026, the fails-to-deliver balance in PLX is 2,533 shares, down 4,119 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (24 July 2026) to 47,861 shares (15 April 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-09-242,533$2.80$7K
2026-09-226,652$2.75$18K
2026-09-21740$2.69$2K
2026-09-149,627$2.64$25K
2026-09-084,992$2.67$13K
2026-09-041,337$2.62$4K
2026-08-241,997$2.38$5K
2026-08-04333$2.32$773
2026-07-3070$2.27$159
2026-07-243$2.37$7
2026-07-1333,000$2.44$81K
2026-07-02489$2.30$1K
2026-06-303,573$2.35$8K
2026-06-182,992$2.02$6K
2026-06-151,045$2.09$2K
2026-06-106,581$1.98$13K
2026-06-0860$1.99$119
2026-05-15886$2.00$2K
2026-05-142,485$1.93$5K
2026-04-301,029$2.12$2K
2026-04-27618$2.18$1K
2026-04-2212,392$2.22$28K
2026-04-175,731$2.30$13K
2026-04-1547,861$2.36$113K
2026-04-10878$2.28$2K
2026-04-087,957$2.19$17K
2026-04-07723$2.21$2K
2026-04-01808$2.17$2K
2026-03-302,336$2.14$5K
2026-03-271,020$2.11$2K

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for PLX in the last 90 days. The most recent filings are listed below. Latest filing: Bashan Dror (PRESIDENT AND CEO) on 2025-12-19.

DateInsiderTitleTypeSharesPriceValueOwned after
2025-12-19Bashan DrorPRESIDENT AND CEOBuy56K$1.81$101K189K
2025-11-18Bar-Shalev AmosDirectorSell168$1.87$3140
2025-09-03Bashan DrorPRESIDENT AND CEOGrant195Kprice not stated in the filingnot stated2.3M
2025-09-03Naos YaronSr. VP, OperationsGrant25Kprice not stated in the filingnot stated226K
2025-09-03Bar-Shalev AmosDirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Ben Zvi ShmuelDirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Schwartz AharonDirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Boudes Pol FDirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Melincoff Gwen ADirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Elze ChristianDirectorGrant8Kprice not stated in the filingnot stated8K
2025-09-03Forster EliotDirectorGrant8Kprice not stated in the filingnot stated8K
2025-06-10Schwartz AharonDirectorBuy129K$1.60$206K303K
2024-09-23Rubin EyalSr. VP and CFOGrant91Kprice not stated in the filingnot stated661K
2024-09-23Rubin EyalSr. VP and CFOGrant99Kprice not stated in the filingnot stated669K
2024-04-01Bashan DrorPRESIDENT AND CEOGrant264Kprice not stated in the filingnot stated2.1M
2023-10-19Bashan DrorPRESIDENT AND CEOBuy48K$1.40$68K116K
2023-10-19Bashan DrorPRESIDENT AND CEOBuy16K$1.41$23K133K
2023-08-15Naos YaronSr. VP, OperationsGrant187Kprice not stated in the filingnot stated201K
2023-08-15Hayon YaelVP, Research & DevelopmentGrant35Kprice not stated in the filingnot stated35K
2023-08-15Rubin EyalSr. VP and CFOGrant202Kprice not stated in the filingnot stated570K
2023-08-15Bashan DrorPresident and CEOGrant800Kprice not stated in the filingnot stated1.9M
2023-01-03Schwartz AharonDirectorBuy110K$1.42$156K174K
2022-04-11Bashan DrorPresident and CEOBuy68K$1.50$102K68K
2022-02-25Bashan DrorPresident and CEOGrant638Kprice not stated in the filingnot stated1.1M
2022-02-25Rubin EyalSr. VP and CFOGrant122Kprice not stated in the filingnot stated368K
2021-06-03Oren DanTenPercentOwnerSell858K$2.25$1.9M3.6M
2021-06-02Oren DanTenPercentOwnerSell61K$2.56$157K4.5M
2020-08-11Bashan DrorPresident and CEOGrant448Kprice not stated in the filingnot stated448K
2020-08-11Rubin EyalSr. VP and CFOGrant246Kprice not stated in the filingnot stated246K
2020-08-11Bashan DrorPresident and CEOGrant448Kprice not stated in the filingnot stated448K
2020-08-11Rubin EyalSr. VP and CFOGrant246Kprice not stated in the filingnot stated246K
2020-04-07Schwartz AharonDirectorBuy64K$2.43$156K64K

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

2 holders report 5% or more of PLX in their latest filing, all on Schedule 13G (passive). The largest reported stake is HOLD Alapkezelo Zrt. at 5.2% of the class (4,157,791 shares), filed 2026-10-15 for an event on 2026-10-14.

FiledFormHolderSharesOf classEvent
2026-10-1513GHOLD Alapkezelo Zrt.other entity4.2M5.2%2026-10-14
2026-07-2913GBlackRock, Inc.parent holding company4.0M5.0%2026-06-30
2026-03-3013G/Ano. 1Kaufman Michael Aindividual3.6M4.5%2026-03-24
2026-03-3013G/Ano. 1MAK CAPITAL ONE LLCinvestment adviser3.6M4.5%2026-03-24
2026-03-3013G/Ano. 1MAK Capital Fund LPpartnership3.6M4.5%2026-03-24

13F holders

Tracked managers holding PLX at their latest 13F. JSON

6 of the 30 tracked managers held PLX at their latest 13F, $4.3M in total at quarter-end prices. Renaissance Technologies is the largest at $2.6M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 1 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-301.1M$2.6M0.00%-129K
Citadel Advisors2026-06-30334K$779K0.00%new
Millennium Management2026-06-30172K$400K0.00%new
AQR Capital Management2026-06-30168K$391K0.00%+137K
Two Sigma Investments2026-06-3043K$99K0.00%+24K
Point72 Asset Management2026-06-3026K$60K0.00%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

Protalix BioTherapeutics 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 Protalix BioTherapeutics (PLX), SEC CIK 1006281, listed on NYSE. 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 2026-09-30.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-24.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 2026-10-15.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 2026-08-12.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 2025-12-19.JSON and CSV
Company record
EDGAR filing index for CIK 1006281Ticker, 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 PLX is sold short?
3,040,042 shares were held short at the 2026-09-30 settlement, 4.3 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 PLX's daily short volume?
On 2026-10-23, 81,714 of the 146,321 PLX shares reported to FINRA were sold short, 55.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does PLX have fails to deliver?
The SEC's latest file shows 2,533 PLX shares failed to deliver at settlement 2026-09-24. Fails are reported per settlement date and published twice a month with a lag.
Are PLX insiders buying or selling?
No open-market insider trades were reported for PLX in the last 90 days. The most recent filings are listed below. Latest filing: Bashan Dror (PRESIDENT AND CEO) on 2025-12-19.
Who owns 5% or more of PLX?
2 holders report 5% or more of PLX in their latest filing, all on Schedule 13G (passive). The largest reported stake is HOLD Alapkezelo Zrt. at 5.2% of the class (4,157,791 shares), filed 2026-10-15 for an event on 2026-10-14.
Which tracked 13F managers own PLX?
6 of the 30 tracked 13F managers held PLX shares at their latest filing, $4.3M in all. The largest: Renaissance Technologies (1.1M shares, $2.6M), Ken Griffin's Citadel Advisors (334K shares, $779K), Izzy Englander's Millennium Management (172K shares, $400K), Cliff Asness's AQR Capital Management (168K shares, $391K), Two Sigma Investments (43K shares, $99K), Steve Cohen's Point72 Asset Management (26K shares, $60K).

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