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Livermore
Livermore
ZHEN

Longfellow Investment Management Co LLC

SEC CIK
0001167487
Latest filing
Aug 6, 2026

The latest 13F from Longfellow Investment Management Co LLC covers Q2 2026 (filed Aug 6, 2026): 244 long positions worth $489.1M. The top 10 holdings make up 51.6% of the portfolio, and the largest is Energy Transfer LP (ET) at 8.6%. Livermore has 22 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
31
Est. +$21.6M
Added
40
Est. +$21.9M
Reduced
26
Est. −$15.3M
Sold out
30
Est. −$17.4M

Top 5 holdings

Share of this quarter's portfolio value

  1. ETEnergy Transfer LP
    8.6%$41.8MHistory
  2. WESWestern Midstream Partners, LP
    8.2%$40.0MHistory
  3. EPDEnterprise Products Partners L.P.
    7.8%$37.9MHistory
  4. MPLXMPLX LP
    6.7%$32.6MHistory
  5. PAAPlains All American Pipeline LP
    5.6%$27.4MHistory

Share of portfolio

Top 5 holdings and the other 239 positions, by share of portfolio value

  1. ET8.6%
  2. WES8.2%
  3. EPD7.8%
  4. MPLX6.7%
  5. PAA5.6%
  6. Other 239 positions63.2%

Biggest buys

New and added positions, by estimated amount bought

  1. WUWestern Union CO
    +$6.70MNewHistory
  2. SSentinelOne, Inc.
    +$6.54MNewHistory
  3. iShares MSCI India ETF46429B598
    +$2.04MAdded
  4. KMBKimberly Clark Corp
    +$1.71MNewHistory
  5. MCDMcDonalds Corp
    +$1.59MAddedHistory

Largest weight increases

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

  1. WUWestern Union CO
    +1.37 pp0.0% → 1.4%History
  2. SSentinelOne, Inc.
    +1.34 pp0.0% → 1.3%History
  3. iShares MSCI India ETF46429B598
    +0.47 pp1.5% → 1.9%
  4. KMBKimberly Clark Corp
    +0.35 pp0.0% → 0.3%History
  5. MCDMcDonalds Corp
    +0.30 pp0.1% → 0.4%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. QCOMQualcomm Inc
    −$5.96MSold outHistory
  2. TXNTexas Instruments Inc
    −$2.57MReducedHistory
  3. CSCOCisco Systems, Inc.
    −$2.31MReducedHistory
  4. ORCLOracle Corp
    −$1.81MReducedHistory
  5. DELLDell Technologies Inc.
    −$1.69MSold outHistory

Largest weight decreases

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

  1. QCOMQualcomm Inc
    −1.24 pp1.2% → 0.0%History
  2. ORCLOracle Corp
    −0.38 pp0.4% → <0.1%History
  3. DELLDell Technologies Inc.
    −0.35 pp0.4% → 0.0%History
  4. TXNTexas Instruments Inc
    −0.35 pp0.4% → <0.1%History
  5. CSCOCisco Systems, Inc.
    −0.32 pp0.3% → <0.1%History

Metrics

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

Portfolio value
$489.1M
+$9.30M (+1.9%) vs. prior quarter
Positions
244
+1 vs. prior quarter
Top 10 concentration
51.6%
Top 10 as share of value
Turnover
6.7%
Q2 2026, one quarter
Average holding period
16.3 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 $832.1M (Q1 2021)

Q1 2021: $832.1MQ2 2021: $704.4MQ3 2021: $612.0MQ4 2021: $614.9MQ1 2022: $619.7MQ2 2022: $463.0MQ3 2022: $489.1MQ4 2022: $441.3MQ1 2023: $437.0MQ2 2023: $435.5MQ3 2023: $377.8MQ4 2023: $405.2MQ1 2024: $442.2MQ2 2024: $398.2MQ3 2024: $399.4MQ4 2024: $388.9MQ1 2025: $409.9MQ2 2025: $404.3MQ3 2025: $421.8MQ4 2025: $443.3MQ1 2026: $479.8MQ2 2026: $489.1M
Q1 2021Q2 2026
13F filings of Longfellow Investment Management Co LLC by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 6, 2026244$489.1METWESEPDvs. Q1 2026SEC
Q1 2026May 12, 2026243$479.8METEPDWESvs. Q4 2025SEC
Q4 2025Feb 11, 2026234$443.3MEPDETWESvs. Q3 2025SEC
Q3 2025Nov 12, 2025258$421.8MEPDWESMPLXvs. Q2 2025SEC
Q2 2025Aug 12, 2025265$404.3MEPDMPLXWESvs. Q1 2025SEC
Q1 2025May 12, 2025275$409.9MEPDMPLXWESvs. Q4 2024SEC
Q4 2024Feb 12, 2025280$388.9METEPDMPLXvs. Q3 2024SEC
Q3 2024Nov 13, 2024261$399.4MEPDETMPLXvs. Q2 2024SEC
Q2 2024Aug 7, 2024258$398.2MEPDETMPLXvs. Q1 2024SEC
Q1 2024May 13, 2024278$442.2MEPDETMPLXvs. Q4 2023SEC
Q4 2023Feb 8, 2024260$405.2MEPDETMPLXvs. Q3 2023SEC
Q3 2023Nov 9, 2023250$377.8MEPDETMPLXvs. Q2 2023SEC
Q2 2023Aug 4, 2023271$435.5MEPDMPLXETvs. Q1 2023SEC
Q1 2023May 12, 2023274$437.0MEPDMPLXETvs. Q4 2022SEC
Q4 2022Feb 9, 2023276$441.3MEPDMPLXETvs. Q3 2022SEC
Q3 2022Nov 14, 2022354$489.1MEPDMPLXETvs. Q2 2022SEC
Q2 2022Aug 15, 2022362$463.0MEPDMPLXMMPvs. Q1 2022SEC
Q1 2022May 16, 2022396$619.7MEPDMPLXETvs. Q4 2021SEC
Q4 2021Feb 14, 2022394$614.9MEPDMPLXMMPvs. Q3 2021SEC
Q3 2021Nov 15, 2021429$612.0MEPDMPLXMMPvs. Q2 2021SEC
Q2 2021Aug 16, 2021447$704.4MEPDMPLXMMPvs. Q1 2021SEC
Q1 2021May 17, 2021505$832.1MEPDMMPMPLX–SEC