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Energy Focus (EFOI)

Energy Focus 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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99K

Short interest

settlement 2026-10-15

6.8

Days to cover

-0.5 days vs prior

34.9%

Short share of volume

2026-11-02

318

Fails to deliver

settlement 2026-10-13

Wed 11 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 EFOI is 98,937 shares, down 27,374 shares over the last month. Over the last 48 readings it ranged from 351 shares (14 November 2025) to 322,823 shares (30 April 2026). At the reported average volume of 14K shares a day that is 6.8 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-1598,937-9.6%14,4876.83
2026-09-30109,429-13.4%15,0317.28
2026-09-15126,311-6.8%6,08220.77
2026-08-31135,506-0.5%8,80715.39
2026-08-14136,198-12.1%7,70317.68
2026-07-31154,903+6.8%10,93514.17
2026-07-15145,058-6.9%12,17911.91
2026-06-30155,813-3.7%28,8415.40
2026-06-15161,851-6.8%55,0872.94
2026-05-29173,612-30.6%51,9953.34
2026-05-15250,351-22.4%104,9232.39
2026-04-30322,823+410.2%15,880,5311.00
2026-04-1563,274+8.4%5,75510.99
2026-03-3158,368+39.0%14,8693.93
2026-03-1341,980+57.9%20,4852.05
2026-02-2726,588-36.5%7,2403.67
2026-02-1341,893+100.6%53,8401.00
2026-01-3020,886+82.0%11,7051.78
2026-01-1511,473+9.9%15,7531.00
2025-12-3110,440+8.9%21,7651.00
2025-12-159,588+169.7%25,1341.00
2025-11-283,555+912.8%6,7931.00
2025-11-14351-45.6%7,1561.00
2025-10-31645-88.7%8,8271.00
2025-10-155,693-11.9%12,6041.00
2025-09-306,466-39.3%34,9481.00
2025-09-1510,649-23.6%18,3991.00
2025-08-2913,937+1277.2%44,6001.00
2025-08-151,012+4.0%3,3011.00
2025-07-31973-80.9%12,3581.00
2025-07-155,097-58.3%16,9941.00
2025-06-3012,210+105.0%38,3751.00
2025-06-135,957-36.6%4,9721.20
2025-05-309,399-35.6%12,3901.00
2025-05-1514,595+11.9%6,7702.16
2025-04-3013,045-26.0%4,1083.18
2025-04-1517,637-32.3%4,5363.89
2025-03-3126,063-32.1%14,6741.78
2025-03-1438,415-61.1%46,0611.00
2025-02-2898,829+438.5%8,847,5211.00
2025-02-1418,354-25.4%14,0981.30
2025-01-3124,597-30.6%8,0383.06
2025-01-1535,449+72.7%9,1693.87
2024-12-3120,530-14.6%5,9943.43
2024-12-1324,051-6.5%5,0454.77
2024-11-2925,714-30.0%6,9613.69
2024-11-1536,716+55.6%25,7821.42
2024-10-3123,595-14.8%7,0413.35

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of EFOI volume is 34.9%, down 31.8 points over the last five sessions. Over the last 30 readings it ranged from 5.6% (30 October 2026) to 66.8% (24 September 2026). The latest reading is in line with the 30-session average of 35.6%, on 5K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-11-022K5K34.9%0
2026-10-304889K5.6%0
2026-10-295K17K29.9%56
2026-10-284K16K25.1%931
2026-10-2745K93K48.1%637
2026-10-26137K206K66.8%1,182
2026-10-233K8K40.6%0
2026-10-224K7K50.9%0
2026-10-212631K22.4%0
2026-10-201K11K13.2%0
2026-10-198K14K55.4%3,234
2026-10-162K22K8.7%106
2026-10-151K3K42.4%15
2026-10-142K7K21.1%0
2026-10-134K8K45.8%0
2026-10-122K4K47.2%0
2026-10-098003K31.3%0
2026-10-082K4K44.1%0
2026-10-072K9K28.2%0
2026-10-067K20K35.1%0
2026-10-054K14K28.3%104
2026-10-0213K22K58.2%0
2026-10-018163K28.4%0
2026-09-305K7K63.7%0
2026-09-291K3K34.8%0
2026-09-281K3K38.1%0
2026-09-252K11K21.4%0
2026-09-247K11K66.8%162
2026-09-234K21K17.3%10
2026-09-223K20K15.1%40

Fails to deliver

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

As of 13 October 2026, the fails-to-deliver balance in EFOI is 318 shares, down 114 shares over the last settlement date. Over the last 30 readings it ranged from 4 shares (8 July 2026) to 37,333 shares (9 July 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-10-13318$2.93$932
2026-10-07432$3.15$1K
2026-10-0613$3.05$40
2026-10-052,386$3.02$7K
2026-09-152,836$2.74$8K
2026-09-144,584$2.80$13K
2026-09-111,729$2.82$5K
2026-09-108,678$2.83$25K
2026-09-099,311$2.84$26K
2026-09-08835$2.88$2K
2026-09-041,582$2.77$4K
2026-09-03239$2.77$662
2026-09-011,886$2.84$5K
2026-08-28918$2.99$3K
2026-08-272,305$2.78$6K
2026-08-261,877$2.88$5K
2026-08-252,577$2.73$7K
2026-08-242,392$2.88$7K
2026-08-211,095$2.74$3K
2026-08-20255$2.72$694
2026-08-1929,164$2.99$87K
2026-08-1722$3.01$66
2026-08-05267$3.13$836
2026-07-302,349$2.82$7K
2026-07-2844$2.83$125
2026-07-2019,405$2.90$56K
2026-07-1720,205$2.94$59K
2026-07-159$3.00$27
2026-07-0937,333$2.97$111K
2026-07-084$2.89$12

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for EFOI in the last 90 days. The most recent filings are listed below. Latest filing: Huang Chiao Chieh (Chief Executive Officer) on 2025-11-26.

DateInsiderTitleTypeSharesPriceValueOwned after
2025-11-26Huang Chiao ChiehChief Executive OfficerBuy262K$2.29$600K1.4M
2025-08-15Huang Chiao ChiehChief Executive OfficerBuy265K$1.89$500K1.2M
2025-06-23Huang Chiao ChiehChief Executive OfficerBuy110K$1.81$200K895K
2025-03-27Huang Chiao ChiehChief Executive OfficerBuy104K$1.93$200K784K
2023-06-29Huang Chiao ChiehDirector,TenPercentOwnerGrant343K$1.76$604K681K
2023-03-30Huang GinaDirector,TenPercentOwnerGrant500K$0.50$250K3.7M
2023-03-28Huang Chiao ChiehDirector,TenPercentOwnerGrant109K$0.56$61K2.7M
2023-02-24Huang GinaDirector,TenPercentOwnerGrant803K$0.50$402K3.2M
2023-01-17Huang GinaDirector,TenPercentOwnerGrant1.5M$0.56$813K2.4M
2023-01-10Huang GinaDirector,TenPercentOwnerGrant326K$0.46$150K965K
2023-01-05Huang GinaDirector,TenPercentOwnerGrant258K$0.39$101K640K
2022-09-28Warren James Raymond IIISVP, GC & Corp. SecretaryExercise or conversion800$0.00$02K
2022-06-22Cheng Jennifer YDirectorExercise or conversion5K$0.00$022K
2022-06-22Jag International Co Ltd.TenPercentOwnerExercise or conversion5K$0.00$0382K
2022-06-22Parker Jeffery RobertDirectorExercise or conversion10K$0.00$010K
2022-06-22Lagarto Brian JDirectorExercise or conversion10K$0.00$010K
2022-06-22Politziner PhilipDirectorExercise or conversion5K$0.00$031K
2022-06-22Socolof StephenChairman and Interim CEOExercise or conversion5K$0.00$026K
2021-09-28Warren James Raymond IIISVP, GC & Corp. SecretaryExercise or conversion800$0.00$0800
2021-08-25Politziner PhilipDirectorBuy3K$3.35$10K26K
2021-08-18Socolof StephenDirectorBuy4K$2.80$10K21K
2021-08-16Tu JamesChairman and CEOBuy5K$2.70$14K250K
2021-05-26McManus GeraldineDirectorExercise or conversion10K$0.00$017K
2021-05-26Politziner PhilipDirectorExercise or conversion10K$0.00$023K
2021-05-26Huang GinaDirector,TenPercentOwnerExercise or conversion10K$0.00$0377K
2021-05-26Socolof StephenDirectorExercise or conversion10K$0.00$017K
2021-05-26Cheng Jennifer YDirectorExercise or conversion10K$0.00$017K
2021-04-01Brilliant Start Enterprise, Inc.TenPercentOwnerConversion344K$0.00$0612K
2020-12-28NESTOR TOD APresident, CFOExercise or conversion11K$2.10$22K45K
2020-09-17McManus GeraldineDirectorExercise or conversion3K$0.00$07K
2020-09-17Politziner PhilipDirectorExercise or conversion3K$0.00$013K
2020-09-17Cheng Jennifer YDirectorExercise or conversion3K$0.00$07K
2020-09-17Socolof StephenDirectorExercise or conversion3K$0.00$07K
2020-09-17Jag International Co Ltd.TenPercentOwnerExercise or conversion4K$0.00$0207K
2020-04-15NESTOR TOD APresident, CFOBuy42K$0.37$16K150K
2020-04-14NESTOR TOD APresident, CFOBuy56K$0.37$21K108K
2020-04-13Politziner PhilipDirectorBuy32K$0.31$10K52K
2020-04-13NESTOR TOD APresident, CFOBuy52K$0.32$17K52K

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 EFOI in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Huang Chiao Chieh at 31.9% of the class (1,998,599 shares), filed 2025-12-31 for an event on 2023-01-17.

FiledFormHolderSharesOf classEvent
2025-12-3113DHuang Chiao Chiehindividual2.0M31.9%2023-01-17
2025-12-3113DSANDER ELECTRONIC CO., LTD.corporation577K9.2%2023-01-17

13F holders

Tracked managers holding EFOI at their latest 13F. JSON

2 of the 30 tracked managers held EFOI at their latest 13F, $152K in total at quarter-end prices. Renaissance Technologies is the largest at $110K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 0 cut.

FundQuarterSharesValueOf portfolioChange in shares
Renaissance Technologies2026-06-3033K$110K0.00%+23K
Citadel Advisors2026-06-3013K$42K0.00%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

Energy Focus 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 Energy Focus (EFOI), SEC CIK 924168, 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 2026-10-13.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 2025-12-31.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 2026-08-11.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 2025-11-26.JSON and CSV
Company record
EDGAR filing index for CIK 924168Ticker, 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 EFOI is sold short?
98,937 shares were held short at the 2026-10-15 settlement, 6.8 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 EFOI's daily short volume?
On 2026-11-02, 1,866 of the 5,343 EFOI shares reported to FINRA were sold short, 34.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does EFOI have fails to deliver?
The SEC's latest file shows 318 EFOI shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are EFOI insiders buying or selling?
No open-market insider trades were reported for EFOI in the last 90 days. The most recent filings are listed below. Latest filing: Huang Chiao Chieh (Chief Executive Officer) on 2025-11-26.
Who owns 5% or more of EFOI?
2 holders report 5% or more of EFOI in their latest filing, all on Schedule 13D (active intent). The largest reported stake is Huang Chiao Chieh at 31.9% of the class (1,998,599 shares), filed 2025-12-31 for an event on 2023-01-17.
Which tracked 13F managers own EFOI?
2 of the 30 tracked 13F managers held EFOI shares at their latest filing, $152K in all. The largest: Renaissance Technologies (33K shares, $110K), Ken Griffin's Citadel Advisors (13K shares, $42K).

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