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Livermore
Livermore
ZHEN

Potomac Capital Management, Inc.

SEC CIK
0001418746
Latest filing
Aug 14, 2026

The latest 13F from Potomac Capital Management, Inc. covers Q2 2026 (filed Aug 14, 2026): 62 long positions worth $136.7M. The top 10 holdings make up 58.7% of the portfolio, and the largest is EchoStar CORP (ECHO) at 12.6%. Livermore has 13 filings on Form 13F from this institution, going back to Q4 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
11
Est. +$7.85M
Added
18
Est. +$7.19M
Reduced
19
Est. −$14.7M
Sold out
12
Est. −$7.99M

Top 5 holdings

Share of this quarter's portfolio value

  1. ECHOEchoStar CORP
    12.6%$17.3MHistory
  2. ATEXAnterix Inc.
    11.7%$16.0MHistory
  3. LSAKLesaka Technologies Inc
    5.5%$7.53MHistory
  4. PESIPerma Fix Environmental Services Inc
    5.0%$6.82MHistory
  5. DSPViant Technology Inc.
    5.0%$6.81MHistory

Share of portfolio

Top 5 holdings and the other 57 positions, by share of portfolio value

  1. ECHO12.6%
  2. ATEX11.7%
  3. LSAK5.5%
  4. PESI5.0%
  5. DSP5.0%
  6. Other 57 positions60.2%

Biggest buys

New and added positions, by estimated amount bought

  1. PESIPerma Fix Environmental Services Inc
    +$2.58MAddedHistory
  2. LSAKLesaka Technologies Inc
    +$2.00MAddedHistory
  3. SHMDSCHMID Group N.V.
    +$1.80MNewHistory
  4. ACVAACV Auctions Inc.
    +$1.42MNewHistory
  5. SVCService Properties Trust
    +$1.09MNewHistory

Largest weight increases

New and added positions, by percentage points of the portfolio gained

  1. WYYWidepoint Corp
    +2.64 pp1.2% → 3.8%History
  2. PESIPerma Fix Environmental Services Inc
    +2.21 pp2.8% → 5.0%History
  3. SHMDSCHMID Group N.V.
    +1.32 pp0.0% → 1.3%History
  4. ACVAACV Auctions Inc.
    +1.04 pp0.0% → 1.0%History
  5. SVCService Properties Trust
    +0.80 pp0.0% → 0.8%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. ECHOEchoStar CORP
    −$3.30MReducedHistory
  2. KVHIKVH Industries Inc
    −$2.04MReducedHistory
  3. ATEXAnterix Inc.
    −$1.93MReducedHistory
  4. HCKTHackett Group, Inc.
    −$1.52MSold outHistory
  5. GSITGsi Technology Inc
    −$1.39MReducedHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. ECHOEchoStar CORP
    −7.62 pp20.3% → 12.6%History
  2. KVHIKVH Industries Inc
    −1.76 pp3.6% → 1.9%History
  3. HCKTHackett Group, Inc.
    −1.33 pp1.3% → 0.0%History
  4. PXLWPixelworks, Inc
    −0.94 pp0.9% → 0.0%History
  5. MXMagnachip Semiconductor Corp
    −0.89 pp0.9% → 0.0%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$136.7M
+$22.3M (+19.5%) vs. prior quarter
Positions
62
−1 vs. prior quarter
Top 10 concentration
58.7%
Top 10 as share of value
Turnover
12.0%
Q2 2026, one quarter
Average holding period
2.8 quarters
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q4 2021), so positions held before then are understated.

13F filings by quarter

12 quarters, going back to Q4 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $136.7M (Q2 2026)

Q4 2021: $104.1MQ1 2022: $103.9MQ2 2022: $77.6MQ3 2022: $71.9MQ4 2022: $72.1MQ1 2023: $81.9MQ2 2023: $72.1MQ3 2023: $77.9MQ4 2023: $69.7MQ4 2025: $119.5MQ1 2026: $114.4MQ2 2026: $136.7M
Q4 2021Q2 2026
13F filings of Potomac Capital Management, Inc. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 202662$136.7MECHOATEXLSAKvs. Q1 2026SEC
Q1 2026May 14, 202663$114.4MECHOATEXDSPvs. Q4 2025SEC
Q4 2025Feb 11, 202666$119.5MECHOINSEDSP–SEC
Q4 2023Feb 15, 202453$69.7MiShares TrLSAKDISHvs. Q3 2023SEC
Q3 2023Nov 14, 202349$77.9MCONXLSAKINSEvs. Q2 2023SEC
Q2 2023Aug 14, 202356$72.1MINSELSAKKVHIvs. Q1 2023SEC
Q1 2023May 15, 202356$81.9MLSAKKVHIINSEvs. Q4 2022SEC
Q4 2022Feb 14, 202352$72.1MLSAKKVHITAvs. Q3 2022SEC
Q3 2022Nov 14, 202259$71.9MTALSAKKVHIvs. Q2 2022SEC
Q2 2022Aug 5, 2022Amended61$77.6MLSAKTAKVHIvs. Q1 2022SEC
Q1 2022Apr 27, 202266$103.9MLSAKINSETAvs. Q4 2021SEC
Q4 2021Feb 7, 202268$104.1MLSAKTAINSE–SEC

13D and 13G filings

Companies where Potomac Capital Management, Inc. reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

1 company, largest stake first.

Companies where Potomac Capital Management, Inc. owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
XELBXCel Brands, Inc.13G/A9.99%584.8K shares+1.39 ppfrom 8.60%Sep 2, 20253 filingsFeb 17, 2026SEC

Latest filings

4 filings on file made by Potomac Capital Management, Inc. or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Potomac Capital Management, Inc.
CompanyFiled (ET)FormStakeChangeEvent dateFiling
XELBXCel Brands, Inc.Feb 17, 20264:01 PM ET13G/A9.99%584.8K shares+1.39 ppfrom 8.60%Dec 31, 2025SEC
XELBXCel Brands, Inc.Nov 14, 20254:30 PM ET13G/A8.60%409.4K shares+2.00 ppfrom 6.60%Sep 30, 2025SEC
XELBXCel Brands, Inc.Sep 2, 20255:44 PM ET13G6.60%316.2K sharesNewAug 1, 2025SEC
HBIOHarvard Bioscience IncFeb 16, 202113G/AOld format–––SEC