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Livermore
Livermore
ZHEN

Ion Asset Management Ltd.

SEC CIK
0001603837
Latest filing
Nov 14, 2025

The latest 13F from Ion Asset Management Ltd. covers Q3 2025 (filed Nov 14, 2025): 61 long positions worth $818.4M. The top 10 holdings make up 62.7% of the portfolio, and the largest is Teva Pharmaceutical Industries Ltd (TEVA) at 13.6%. Livermore has 19 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q3 2025

Share counts compared with Q2 2025: 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
12
Est. +$118.3M
Added
8
Est. +$23.9M
Reduced
23
Est. −$1.24B
Sold out
9
Est. −$35.7M

Top 5 holdings

Share of this quarter's portfolio value

  1. TEVATeva Pharmaceutical Industries Ltd
    13.6%$111.3MHistory
  2. DKDelek US Holdings, Inc.
    7.3%$59.5MHistory
  3. VanEck ETF Trust92189F106
    6.8%$55.4M
  4. CHKPCheck Point Software Technologies Ltd
    6.5%$53.5MHistory
  5. CSGPCostar Group, Inc.
    5.5%$45.1MHistory

Biggest buys

New and added positions, by estimated amount bought

  1. CHKPCheck Point Software Technologies Ltd
    +$53.5MNewHistory
  2. DDDuPont de Nemours, Inc.
    +$35.1MNewHistory
  3. NXENexGen Energy Ltd.
    +$20.4MAddedHistory
  4. FOLDAmicus Therapeutics, Inc.
    +$6.87MNewHistory
  5. VRNSVaronis Systems Inc
    +$5.17MNewHistory

Largest weight increases

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

  1. CHKPCheck Point Software Technologies Ltd
    +6.54 pp0.0% → 6.5%History
  2. DDDuPont de Nemours, Inc.
    +4.29 pp0.0% → 4.3%History
  3. NXENexGen Energy Ltd.
    +2.54 pp<0.1% → 2.6%History
  4. RIGTransocean Ltd.
    +0.99 pp0.6% → 1.6%History
  5. FOLDAmicus Therapeutics, Inc.
    +0.84 pp0.0% → 0.8%History

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. TEVATeva Pharmaceutical Industries Ltd
    −$663.3MReducedHistory
  2. CIENCiena Corp
    −$145.6MReducedHistory
  3. AERAerCap Holdings N.V.
    −$78.5MReducedHistory
  4. LWLamb Weston Holdings, Inc.
    −$64.0MReducedHistory
  5. DKDelek US Holdings, Inc.
    −$61.3MReducedHistory

Largest weight decreases

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

  1. TEVATeva Pharmaceutical Industries Ltd
    −25.24 pp38.8% → 13.6%History
  2. AERAerCap Holdings N.V.
    −2.27 pp6.7% → 4.4%History
  3. CIENCiena Corp
    −2.18 pp6.0% → 3.8%History
  4. PRGOPERRIGO Co plc
    −1.38 pp6.2% → 4.8%History
  5. LWLamb Weston Holdings, Inc.
    −1.37 pp5.1% → 3.7%History

Metrics

13F metrics for Q3 2025, computed only from the numbers in the filings. Definitions below.

Portfolio value
$818.4M
−$836.2M (−50.5%) vs. prior quarter
Positions
61
+3 vs. prior quarter
Top 10 concentration
62.7%
Top 10 as share of value
Turnover
11.5%
Q3 2025, one quarter
Average holding period
7.8 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 (Q1 2021), so positions held before then are understated.

13F filings by quarter

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

Peak $1.67B (Q4 2024)

Q1 2021: $867.4MQ2 2021: $813.4MQ3 2021: $731.4MQ4 2021: $787.4MQ1 2022: $783.8MQ2 2022: $669.3MQ3 2022: $635.7MQ4 2022: $737.2MQ1 2023: $952.9MQ2 2023: $856.1MQ3 2023: $958.7MQ4 2023: $1.19BQ1 2024: $1.37BQ2 2024: $1.50BQ3 2024: $1.54BQ4 2024: $1.67BQ1 2025: $1.36BQ2 2025: $1.65BQ3 2025: $818.4M
Q1 2021Q3 2025
13F filings of Ion Asset Management Ltd. by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q3 2025Nov 14, 202561$818.4MTEVADKVanEck ETF Trustvs. Q2 2025SEC
Q2 2025Aug 15, 202558$1.65BTEVAAERPRGOvs. Q1 2025SEC
Q1 2025May 15, 202552$1.36BTEVAAERCIENvs. Q4 2024SEC
Q4 2024Feb 14, 202558$1.67BTEVAAERCIENvs. Q3 2024SEC
Q3 2024Nov 14, 202463$1.54BTEVAAERILMNvs. Q2 2024SEC
Q2 2024Aug 14, 202467$1.50BTEVAAERCIENvs. Q1 2024SEC
Q1 2024May 15, 202438$1.37BTEVAAERCIENvs. Q4 2023SEC
Q4 2023Feb 14, 202433$1.19BTEVACIENMATvs. Q3 2023SEC
Q3 2023Nov 14, 202334$958.7MTEVACIENDKvs. Q2 2023SEC
Q2 2023Aug 14, 202336$856.1MTEVAATVICIENvs. Q1 2023SEC
Q1 2023May 15, 202333$952.9MTEVACHKPATVIvs. Q4 2022SEC
Q4 2022Feb 14, 202332$737.2MCHKPCIENDKvs. Q3 2022SEC
Q3 2022Oct 26, 202239$635.7MCHKPCIENDKvs. Q2 2022SEC
Q2 2022Aug 16, 202242$669.3MCHKPMOSPANWvs. Q1 2022SEC
Q1 2022May 16, 202239$783.8MCHKPMOSPANWvs. Q4 2021SEC
Q4 2021Feb 14, 202235$787.4MCyberark Software LtdCHKPPANWvs. Q3 2021SEC
Q3 2021Nov 15, 202149$731.4MCyberark Software LtdJAMFCIENvs. Q2 2021SEC
Q2 2021Aug 16, 202148$813.4MCIENCyberark Software LtdMRVLvs. Q1 2021SEC
Q1 2021May 17, 202140$867.4MCHKPCyberark Software LtdCIEN–SEC

13D and 13G filings

Companies where Ion Asset Management Ltd. 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 Ion Asset Management Ltd. owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
Delek US Energy, Inc.ION Asset Management Ltd.13G/A6.17%3.74M shares–Oct 29, 20242 filingsAug 14, 2025SEC

Latest filings

4 filings on file made by Ion Asset Management Ltd. or listing it as a reporting person, newest first.

Schedule 13D and 13G filings by Ion Asset Management Ltd.
CompanyFiled (ET)FormStakeChangeEvent dateFiling
DKDelek US Holdings, Inc.Nov 14, 20254:30 PM ET13G/A3.07%1.84M shares−1.98 ppfrom 5.05%Below 5%Sep 30, 2025SEC
DKDelek US Holdings, Inc.Nov 14, 20254:00 PM ET13G5.05%3.26M sharesNewOct 24, 2024SEC
Delek US Energy, Inc.ION Asset Management Ltd.Aug 14, 20254:31 PM ET13G/A6.17%3.74M shares–Jun 30, 2025SEC
Delek US Energy, Inc.Oct 29, 20244:30 PM ET13GOld format–New–SEC