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Livermore
Livermore
ZHEN

Wellesley Asset Management

SEC CIK
0001533551
Latest filing
Aug 13, 2026

The latest 13F from Wellesley Asset Management covers Q2 2026 (filed Aug 13, 2026): 64 long positions worth $1.10B. The top 10 holdings make up 33.7% of the portfolio, and the largest is Box Inc at 4.3%. Livermore has 24 filings on Form 13F from this institution, going back to Q1 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
17
Est. +$195.8M
Added
0
Reduced
0
Sold out
7
Est. −$91.3M

Top 5 holdings

Share of this quarter's portfolio value

  1. Box Inc10316TAD6
    4.3%$47.0M
  2. Itron, Inc.465741AQ9
    3.9%$42.7M
  3. Blackline, Inc.09239BAF6
    3.6%$39.8M
  4. LivaNova PLC53802LAB8
    3.6%$39.0M
  5. AeroVironment Inc008073AA6
    3.4%$37.6M

Share of portfolio

Top 5 holdings and the other 59 positions, by share of portfolio value

  1. Box Inc4.3%
  2. Itron, Inc.3.9%
  3. Blackline, Inc.3.6%
  4. LivaNova PLC3.6%
  5. AeroVironment Inc3.4%
  6. Other 59 positions81.2%

Biggest buys

New and added positions, by estimated amount bought

  1. Southern Co842587ED5
    +$30.2MNew
  2. DoorDash, Inc.25809KAB1
    +$30.0MNew
  3. Travere Therapeutics, Inc.89422GAB3
    +$26.3MNew
  4. Merit Med Sys Inc589889AB0
    +$26.1MNew
  5. Eeft 0.625 10/01/30 CVT298736AM1
    +$22.7MNew

Largest weight increases

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

  1. Southern Co842587ED5
    +2.76 pp0.0% → 2.8%
  2. DoorDash, Inc.25809KAB1
    +2.74 pp0.0% → 2.7%
  3. Travere Therapeutics, Inc.89422GAB3
    +2.40 pp0.0% → 2.4%
  4. Merit Med Sys Inc589889AB0
    +2.38 pp0.0% → 2.4%
  5. Eeft 0.625 10/01/30 CVT298736AM1
    +2.07 pp0.0% → 2.1%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. Vishay Intertechnology Inc928298AR9
    −$39.6MSold out
  2. SHIFT4 PMTS Inc82452JAD1
    −$29.5MSold out
  3. Spectrum Brands Inc84762LAZ8
    −$9.19MSold out
  4. Array Technologies, Inc.04271TAB6
    −$6.69MSold out
  5. Centerpoint Energy Inc15189TBD8
    −$4.35MSold out

Largest weight decreases

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

  1. Vishay Intertechnology Inc928298AR9
    −4.15 pp4.2% → 0.0%
  2. SHIFT4 PMTS Inc82452JAD1
    −3.10 pp3.1% → 0.0%
  3. Spectrum Brands Inc84762LAZ8
    −0.96 pp1.0% → 0.0%
  4. Array Technologies, Inc.04271TAB6
    −0.70 pp0.7% → 0.0%
  5. Centerpoint Energy Inc15189TBD8
    −0.46 pp0.5% → 0.0%

Metrics

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

Portfolio value
$1.10B
+$142.9M (+15.0%) vs. prior quarter
Positions
64
+10 vs. prior quarter
Top 10 concentration
33.7%
Top 10 as share of value
Turnover
8.9%
Q2 2026, one quarter
Average holding period
4.9 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 (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $2.01B (Q3 2023)

Q1 2021: $833.9MQ2 2021: $833.9MQ3 2021: $1.18BQ4 2021: $1.25BQ1 2022: $1.47BQ2 2022: $1.50BQ3 2022: $1.41BQ4 2022: $1.48MQ1 2023: $1.36BQ2 2023: $1.23BQ3 2023: $2.01BQ4 2023: $1.00BQ1 2024: $990.3MQ2 2024: $944.5MQ3 2024: $1.03BQ4 2024: $962.3MQ1 2025: $1.00BQ2 2025: $1.05BQ3 2025: $998.8MQ4 2025: $960.8MQ1 2026: $952.5MQ2 2026: $1.10B
Q1 2021Q2 2026
13F filings of Wellesley Asset Management by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 13, 202664$1.10BBox IncItron, Inc.Blackline, Inc.vs. Q1 2026SEC
Q1 2026May 11, 202654$952.5MBox IncVishay Intertechnology IncSYNAPTICS Incvs. Q4 2025SEC
Q4 2025Feb 6, 2026Amended54$960.8MBox IncHaemonetics Corp MassSYNAPTICS Incvs. Q3 2025SEC
Q3 2025Oct 21, 202556$998.8MFord MTR Co DelLivaNova PLCPG&E Corpvs. Q2 2025SEC
Q2 2025Aug 5, 202564$1.05BAkamai Technologies IncBiomarin Pharmaceutical IncVishay Intertechnology Incvs. Q1 2025SEC
Q1 2025May 2, 202561$1.00BAkamai Technologies IncBiomarin Pharmaceutical IncFord MTR Co Delvs. Q4 2024SEC
Q4 2024Jan 27, 202558$962.3MLci IndsFord MTR Co DelGreenbrier Cos Incvs. Q3 2024SEC
Q3 2024Oct 23, 202449$1.03BLci IndsFord MTR Co DelBiomarin Pharmaceutical Incvs. Q2 2024SEC
Q2 2024Aug 7, 202448$944.5MLci IndsFord MTR Co DelAkamai Technologies Incvs. Q1 2024SEC
Q1 2024May 14, 202455$990.3MGreenbrier Cos IncFord MTR Co DelAkamai Technologies Incvs. Q4 2023SEC
Q4 2023Feb 9, 202439$1.00BAkamai Technologies IncLci IndsGreenbrier Cos Incvs. Q3 2023SEC
Q3 2023Nov 13, 2023Amended45$2.01BGreenbrier Cos IncFord MTR Co DelAkamai Technologies Incvs. Q2 2023SECSEC
Q2 2023Aug 14, 202342$1.23BGreenbrier Cos IncFord MTR Co DelAkamai Technologies Incvs. Q1 2023SEC
Q1 2023May 15, 202347$1.36BFord MTR Co DelGreenbrier Cos IncVishay Intertechnology Incvs. Q4 2022SEC
Q4 2022Feb 10, 202348$1.48MGreenbrier Cos IncFord MTR Co DelHalozyme Therapeutics, Inc.vs. Q3 2022SEC
Q3 2022Nov 14, 202265$1.41BGreenbrier Cos IncFord MTR Co DelHalozyme Therapeutics, Inc.vs. Q2 2022SEC
Q2 2022Aug 15, 202255$1.50BHalozyme Therapeutics, Inc.Greenbrier Cos IncFord MTR Co Delvs. Q1 2022SEC
Q1 2022May 16, 202268$1.47BParsons CorpStride, Inc.Meritor, Inc.vs. Q4 2021SEC
Q4 2021Feb 14, 202248$1.25BMeritor, Inc.Parsons CorpStride, Inc.vs. Q3 2021SEC
Q3 2021Nov 15, 202157$1.18BVishay Intertechnology IncMeritor, Inc.Pacira BioSciences, Inc.vs. Q2 2021SEC
Q2 2021Aug 13, 202131$833.9MVishay Intertechnology IncGreenbrier Cos IncNuvasive Incvs. Q1 2021SEC
Q1 2021May 11, 202131$833.9MVishay Intertechnology IncGreenbrier Cos IncNuvasive Inc–SEC