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Livermore
Livermore
ZHEN

Loomis Sayles & Co L P

SEC CIK
0000312348
Latest filing
Aug 14, 2026

The latest 13F from Loomis Sayles & Co L P covers Q2 2026 (filed Aug 14, 2026): 707 long positions worth $79.6B. The top 10 holdings make up 53.1% of the portfolio, and the largest is NVIDIA Corp (NVDA) at 9.9%. Livermore has 23 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
80
Est. +$751.6M
Added
245
Est. +$2.48B
Reduced
340
Est. −$4.10B
Sold out
91
Est. −$558.9M

Top 5 holdings

Share of this quarter's portfolio value

  1. NVDANVIDIA Corp
    9.9%$7.90BHistory
  2. GOOGLAlphabet Inc.
    7.7%$6.15BHistory
  3. TSLATesla, Inc.
    6.7%$5.33BHistory
  4. AMZNAmazon Com Inc
    5.5%$4.36BHistory
  5. METAMeta Platforms, Inc.
    5.3%$4.23BHistory

Share of portfolio

Top 5 holdings and the other 702 positions, by share of portfolio value

  1. NVDA9.9%
  2. GOOGL7.7%
  3. TSLA6.7%
  4. AMZN5.5%
  5. META5.3%
  6. Other 702 positions64.9%

Biggest buys

New and added positions, by estimated amount bought

  1. MSFTMicrosoft Corp
    +$640.2MAddedHistory
  2. AVGOBroadcom Inc.
    +$305.3MAddedHistory
  3. NFLXNetflix Inc
    +$145.9MAddedHistory
  4. ADSKAutodesk, Inc.
    +$115.7MAddedHistory
  5. NVONovo Nordisk A S
    +$75.6MAddedHistory

Largest weight increases

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

  1. MSFTMicrosoft Corp
    +0.62 pp3.0% → 3.6%History
  2. AVGOBroadcom Inc.
    +0.39 pp<0.1% → 0.4%History
  3. TSLATesla, Inc.
    +0.37 pp6.3% → 6.7%History
  4. NVONovo Nordisk A S
    +0.28 pp0.8% → 1.1%History
  5. Uber Technologies, Inc90353TAM2
    +0.09 pp<0.1% → 0.1%

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. QCOMQualcomm Inc
    −$742.1MReducedHistory
  2. NVDANVIDIA Corp
    −$295.2MReducedHistory
  3. PYPLPayPal Holdings, Inc.
    −$262.3MReducedHistory
  4. ILMNIllumina, Inc.
    −$177.8MReducedHistory
  5. KLACKLA Corp
    −$144.4MReducedConverted for a 10-for-1 splitHistory

Largest weight decreases

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

  1. QCOMQualcomm Inc
    −0.69 pp0.7% → <0.1%History
  2. REGNRegeneron Pharmaceuticals, Inc.
    −0.53 pp2.0% → 1.5%History
  3. PYPLPayPal Holdings, Inc.
    −0.37 pp0.4% → <0.1%History
  4. ORCLOracle Corp
    −0.26 pp3.3% → 3.1%History
  5. ISRGIntuitive Surgical Inc
    −0.23 pp1.1% → 0.8%History

Metrics

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

Portfolio value
$79.6B
+$5.32B (+7.2%) vs. prior quarter
Positions
707
−11 vs. prior quarter
Top 10 concentration
53.1%
Top 10 as share of value
Turnover
4.2%
Q2 2026, one quarter
Average holding period
20.2 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 $84.1B (Q3 2025)

Q1 2021: $77.2BQ2 2021: $82.5BQ3 2021: $81.3BQ4 2021: $82.7BQ1 2022: $74.8BQ2 2022: $53.9BQ3 2022: $49.4BQ4 2022: $49.9BQ1 2023: $57.6BQ2 2023: $62.0BQ3 2023: $58.2BQ4 2023: $65.3BQ1 2024: $70.3BQ2 2024: $72.6BQ3 2024: $76.2BQ4 2024: $79.2BQ1 2025: $69.2BQ2 2025: $79.8BQ3 2025: $84.1BQ4 2025: $83.0BQ1 2026: $74.3BQ2 2026: $79.6B
Q1 2021Q2 2026
13F filings of Loomis Sayles & Co L P by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 14, 2026707$79.6BNVDAGOOGLTSLAvs. Q1 2026SEC
Q1 2026May 14, 2026718$74.3BNVDAGOOGLTSLAvs. Q4 2025SEC
Q4 2025Feb 12, 2026695$83.0BNVDATSLAGOOGLvs. Q3 2025SEC
Q3 2025Nov 13, 2025712$84.1BNVDATSLAMETAvs. Q2 2025SEC
Q2 2025Aug 13, 2025722$79.8BNVDAMETANFLXvs. Q1 2025SEC
Q1 2025May 14, 2025726$69.2BNVDAMETAAMZNvs. Q4 2024SEC
Q4 2024Feb 12, 2025718$79.2BNVDATSLAMETAvs. Q3 2024SEC
Q3 2024Nov 13, 2024692$76.2BNVDAMETATSLAvs. Q2 2024SEC
Q2 2024Aug 13, 2024711$72.6BNVDAMETAAMZNvs. Q1 2024SEC
Q1 2024May 14, 2024696$70.3BNVDAMETAAMZNvs. Q4 2023SEC
Q4 2023Feb 13, 2024970$65.3BMETANVDAAMZNvs. Q3 2023SEC
Q3 2023Nov 9, 2023907$58.2BMETANVDAAMZNvs. Q2 2023SEC
Q2 2023Aug 11, 2023972$62.0BNVDAMETAAMZNvs. Q1 2023SEC
Q1 2023May 15, 2023Amended973$57.6BNVDAMETAVvs. Q4 2022SEC
Q4 2022Feb 10, 2023851$49.9BVBANVDAvs. Q3 2022SEC
Q3 2022Nov 14, 2022951$49.4BAMZNVMSFTvs. Q2 2022SEC
Q2 2022Aug 5, 2022972$53.9BAMZNVMSFTvs. Q1 2022SEC
Q1 2022May 13, 20221,004$74.8BAMZNNVDAVvs. Q4 2021SEC
Q4 2021Feb 14, 2022764$82.7BNVDAAMZNMETAvs. Q3 2021SEC
Q3 2021Nov 12, 2021885$81.3BAMZNNVDAMETAvs. Q2 2021SEC
Q2 2021Aug 13, 2021825$82.5BAMZNMETANVDAvs. Q1 2021SEC
Q1 2021May 17, 2021832$77.2BAMZNMETAV–SEC

13D and 13G filings

Companies where Loomis Sayles & Co L P 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 Loomis Sayles & Co L P owns 5% or more
CompanyLatest formStakeChangeFirst filedLatest filingFiling
SEICSEI Investments Co13G/A7.04%8.46M shares−0.06 ppfrom 7.10%Feb 12, 202113 filingsAug 14, 2026SEC

Latest filings

34 filings on file made by Loomis Sayles & Co L P or listing it as a reporting person; the latest 20 are shown.

Schedule 13D and 13G filings by Loomis Sayles & Co L P
CompanyFiled (ET)FormStakeChangeEvent dateFiling
SEICSEI Investments CoAug 14, 202610:42 AM ET13G/A7.04%8.46M shares−0.06 ppfrom 7.10%Jun 30, 2026SEC
SEICSEI Investments CoMay 14, 20262:48 PM ET13G/A7.10%8.68M shares−0.09 ppfrom 7.19%Mar 31, 2026SEC
SEICSEI Investments CoFeb 12, 20269:17 AM ET13G/A7.19%8.81M shares−0.07 ppfrom 7.26%Dec 31, 2025SEC
SEICSEI Investments CoNov 13, 20259:27 AM ET13G/A7.26%8.98M shares+0.12 ppfrom 7.14%Sep 30, 2025SEC
SEICSEI Investments CoAug 13, 20259:46 AM ET13G/A7.14%8.89M shares+0.27 ppfrom 6.87%Jun 30, 2025SEC
ECHOEchoStar CORPMay 15, 20259:37 AM ET13G/A3.04%4.86M shares−2.94 ppfrom 5.98%Below 5%Mar 31, 2025SEC
SEICSEI Investments CoMay 15, 20259:36 AM ET13G/A6.87%8.72M shares0.00 ppfrom 6.87%Mar 31, 2025SEC
ECHOEchoStar CORPFeb 12, 20259:40 AM ET13G5.98%8.94M sharesNewDec 31, 2024SEC
SEICSEI Investments CoFeb 12, 20259:35 AM ET13G/A6.87%8.86M shares−0.18 ppfrom 7.05%Dec 31, 2024SEC
SEICSEI Investments CoNov 14, 20244:09 PM ET13G/A7.05%9.15M shares0.00 ppfrom 7.05%Sep 30, 2024SEC
SEICSEI Investments CoNov 13, 20249:36 AM ET13G/A7.05%9.15M shares–Sep 30, 2024SEC
SEICSEI Investments CoFeb 13, 202413G/AOld format–––SEC
DISHDISH Network CORPFeb 13, 202413G/AOld format–––SEC
SEICSEI Investments CoFeb 13, 202313G/AOld format–––SEC
FDSFactset Research Systems IncFeb 13, 202313G/AOld format–––SEC
EXPDExpeditors International of Washington IncFeb 13, 202313G/AOld format–––SEC
DISHDISH Network CORPFeb 13, 202313G/AOld format–––SEC
SEICSEI Investments CoFeb 14, 202213G/AOld format–––SEC
Hexion Inc.Feb 14, 202213G/AOld format–––SEC
FDSFactset Research Systems IncFeb 14, 202213G/AOld format–––SEC