CIK: 0000312348
Total reported value
$74.3B
Reporting period: 2026-03-31 · Number of holdings: 1168
LOOMIS SAYLES & CO L P disclosed 1168 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $74.3B and a quarterly turnover rate of 17.3%.
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Loomis Sayles & Co L P's disclosed holdings carry a Herfindahl concentration index of 0.035 — mathematically equivalent to about 28 equally-sized positions, well below its 1168 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 4.95), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Add NFLX
+2.0% $160.4M
Add BKNG
+6096.5% $506.7M
Add NVDA
+1.6% -$377.1M
Trim TSLA
+0.0% -$984.3M
Trim SHOP
-0.5% -$620.7M
Trim ORCL
+3.9% -$680.4M
LOOMIS SAYLES is hunting Alpha through a hyper-diversified momentum basket, doubling down on mega-cap tech scale with active adds to TSLA, MSFT, META, and ORCL while trimming SHOP and CRM. This is not a defensive rotation but a conviction bet that pricing power and earnings momentum remain with the largest platforms.
The portfolio is pricing in a continued disinflationary growth regime where mega-cap technology companies expand margins and dominate earnings growth. The opposing thesis is that this exact crowding—48% in Tech and Comm Services—is a reflexivity bomb that will compress multiples the moment liquidity tightens or growth decelerates, leaving zero protection from value or cyclical factors.
The 100% momentum tilt wedded to a turnover ratio of 0.17 locks this portfolio into a single-factor discipline that is incapable of adapting to regime changes. This is not a diversified quant strategy; it is a maximum-conviction momentum bet hidden beneath 718 holdings, making a momentum crash—not sector exposure or duration—the textbook tail risk that can hit every position simultaneously.
Produced with AI assistance from publicly disclosed 13F data. Historical only; not a personalized investment recommendation.
Showing top 200 holdings (of 1168 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 9.62% | +0.54% | +1.58% | |
| 2 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 6.71% | +0.24% | +1.15% | |
| 3 | TSLA | Tesla INC | Stock-Consumer Disc | 6.33% | -0.53% | +0.04% | |
| 4 | META | Meta Platforms Inc-class A | Stock-Comm Services | 5.74% | -0.16% | +0.58% | |
| 5 | AMZN | Amazon.com INC | Stock-Consumer Disc | 5.14% | +0.14% | +2.02% | |
| 6 | NFLX | Netflix INC | Stock-Comm Services | 4.91% | +0.70% | +2.00% | |
| 7 | BA | Boeing Co/the | Stock-Industrials | 3.77% | +0.06% | -0.69% | |
| 8 | V | Visa Inc-class A Shares | Stock-Financials | 3.76% | -0.14% | +0.35% | |
| 9 | ORCL | Oracle CORP | Stock-Tech | 3.33% | -0.48% | +3.94% | |
| 10 | MSFT | Microsoft CORP | Stock-Tech | 3.02% | -0.48% | +1.11% | |
| 11 | MNST | Monster Beverage CORP | Stock-Consumer Staples | 2.53% | +0.10% | -1.38% | |
| 12 | VRTX | Vertex Pharmaceuticals INC | Stock-Healthcare | 2.41% | +0.21% | -0.74% | |
| 13 | SHOP | Shopify INC - Class A | Stock-Tech | 2.30% | -0.51% | -0.46% | |
| 14 | REGN | Regeneron Pharmaceuticals | Stock-Healthcare | 1.99% | — | -1.14% | |
| 15 | ADSK | Autodesk INC | Stock-Tech | 1.85% | -0.22% | -0.98% | |
| 16 | DIS | Walt Disney Co/the | Stock-Comm Services | 1.81% | -0.13% | -1.34% | |
| 17 | CRM | Salesforce INC | Stock-Tech | 1.52% | -0.42% | -0.21% | |
| 18 | SBUX | Starbucks CORP | Stock-Consumer Disc | 1.13% | +0.17% | -1.08% | |
| 19 | NVS | Novartis Ag-sponsored Adr | Stock-Healthcare | 1.12% | +0.20% | -1.95% | |
| 20 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.10% | +0.01% | -1.33% | |
| 21 | EXPD | Expeditors Intl Wash INC | Stock-Industrials | 1.08% | +0.06% | -1.36% | |
| 22 | ISRG | Intuitive Surgical INC | Stock-Healthcare | 1.05% | -0.12% | -0.92% | |
| 23 | DE | Deere & Co | Stock-Industrials | 1.04% | +0.27% | -0.40% | |
| 24 | SEIC | Sei Investments Company | Stock-Financials | 0.91% | +0.05% | -1.32% | |
| 25 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 0.90% | -0.06% | -1.07% | |
| 26 | NVO | Novo-nordisk A/s-spons Adr | Stock-Healthcare | 0.84% | -0.21% | -0.69% | |
| 27 | YUM | Yum! Brands INC | Stock-Consumer Disc | 0.78% | — | -1.15% | |
| 28 | QCOM | Qualcomm INC | Stock-Tech | 0.73% | -0.15% | -1.48% | |
| 29 | BKNG | Booking Holdings INC | Stock-Consumer Disc | 0.70% | +0.69% | +6096.52% | |
| 30 | XYZ | Block INC | Stock-Financials | 0.60% | +0.01% | -1.31% | |
| 31 | NKE | Nike INC -cl B | Stock-Consumer Disc | 0.56% | -0.05% | -0.45% | |
| 32 | ILMN | Illumina INC | Stock-Healthcare | 0.49% | -0.17% | -29.45% | |
| 33 | FDS | Factset Research Systems INC | Stock-Financials | 0.43% | -0.09% | -1.15% | |
| 34 | MA | Mastercard INC - A | Stock-Financials | 0.41% | — | +4.86% | |
| 35 | LSGR | Natixis Loomis Focused Grwth | ETF-Other | 0.40% | — | +1.54% | |
| 36 | SPGI | S&p Global INC | Stock-Financials | 0.39% | -0.01% | +6.03% | |
| 37 | PYPL | Paypal Holdings INC | Stock-Financials | 0.39% | -0.07% | -1.49% | |
| 38 | WDAY | Workday Inc-class A | Stock-Tech | 0.36% | -0.18% | -0.80% | |
| 39 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 0.30% | — | -16.86% | |
| 40 | HLT | Hilton Worldwide Holdings In | Stock-Consumer Disc | 0.30% | — | -19.78% | |
| 41 | PH | Parker Hannifin CORP | Stock-Industrials | 0.29% | -0.12% | -37.38% | |
| 42 | TT | Trane Technologies plc | Stock-Industrials | 0.28% | — | +5.98% | |
| 43 | YUMC | Yum China Holdings INC | Stock-Consumer Disc | 0.28% | — | -0.54% | |
| 44 | BLK | Blackrock INC | Stock-Financials | 0.27% | -0.08% | -23.66% | |
| 45 | ORLY | O'reilly Automotive INC | Stock-Consumer Disc | 0.26% | — | -12.93% | |
| 46 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 0.26% | — | -8.77% | |
| 47 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.25% | -0.03% | -9.55% | |
| 48 | KLAC | Kla CORP | Stock-Tech | 0.25% | — | -9.73% | |
| 49 | ECHO 3.875 11-30-30 | Echostar CORP | Stock-Comm Services | 0.25% | — | -18.58% | |
| 50 | CMI | Cummins INC | Stock-Industrials | 0.24% | -0.07% | -33.30% |
Performance for Q3 2026
-2.2%
Performance Last 4 Quarters
+3.2%
Based on 78% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 1168 | $74.3B | 17 | |
| 2025-12-31 | 1124 | $83.0B | 14 | |
| 2025-09-30 | 1132 | $84.1B | 30 | |
| 2025-06-30 | 1145 | $79.8B | 0 | |
| 2025-03-31 | 1086 | $69.2B | 100 | |
| 2024-12-31 | 1079 | $79.2B | 0 | |
| 2024-09-30 | 1044 | $76.2B | 0 | |
| 2024-06-30 | 1079 | $72.6B | 0 | |
| 2024-03-31 | 1058 | $70.3B | 0 | |
| 2023-12-31 | 1326 | $65.3B | 0 | |
| 2023-09-30 | 1277 | $58.2B | 0 | |
| 2023-06-30 | 1343 | $62.0B | 0 | |
| 2023-03-31 | 1340 | $57.6B | 0 | |
| 2022-12-31 | 1195 | $49.9B | 0 | |
| 2022-09-30 | 1297 | $49.4B | 0 | |
| 2022-06-30 | 1328 | $53.9B | 0 | |
| 2022-03-31 | 1409 | $74.8B | 0 | |
| 2021-12-31 | 1168 | $82.7B | 0 | |
| 2021-09-30 | 1290 | $81.3B | 0 | |
| 2021-06-30 | 1223 | $82.5B | 97 | |
| 2021-03-31 | 1216 | $77.2B | 16 | |
| 2020-12-31 | 1174 | $75.7B | 21 | |
| 2020-09-30 | 1004 | $68.7B | 16 | |
| 2020-06-30 | 1045 | $62.3B | 36 | |
| 2020-03-31 | 1090 | $48.5B | 33 | |
| 2019-12-31 | 1125 | $58.8B | 20 | |
| 2019-09-30 | 1056 | $52.0B | 13 | |
| 2019-06-30 | 856 | $53.6B | 12 | |
| 2019-03-31 | 1064 | $50.9B | 23 | |
| 2018-12-31 | 1131 | $42.4B | 26 | |
| 2018-09-30 | 1192 | $51.0B | 15 | |
| 2018-06-30 | 1173 | $49.5B | 17 | |
| 2018-03-31 | 1195 | $47.1B | 14 | |
| 2017-12-31 | 1156 | $48.0B | 15 | |
| 2017-09-30 | 1268 | $45.9B | 17 | |
| 2017-06-30 | 1281 | $42.5B | 17 | |
| 2017-03-31 | 1283 | $40.1B | 20 | |
| 2016-12-31 | 1350 | $40.7B | 20 | |
| 2016-09-30 | 1339 | $39.5B | 22 | |
| 2016-06-30 | 1335 | $36.8B | 16 | |
| 2016-03-31 | 1406 | $35.2B | 19 | |
| 2015-12-31 | 1398 | $35.5B | 29 | |
| 2015-09-30 | 1368 | $33.8B | 18 | |
| 2015-06-30 | 1281 | $36.6B | 24 | |
| 2015-03-31 | 1128 | $36.1B | 18 | |
| 2014-12-31 | 1128 | $36.1B | 24 | |
| 2014-09-30 | 1112 | $34.1B | 18 | |
| 2014-06-30 | 1152 | $35.2B | 21 | |
| 2014-03-31 | 1136 | $35.3B | 22 | |
| 2013-12-31 | 1161 | $33.3B | 27 | |
| 2013-09-30 | 1139 | $30.9B | 29 | |
| 2013-06-30 | 1107 | $28.0B | 0 |
Loomis Sayles & Co L P's most significant position changes for 2026-03-31: Sold out: Piper Sandler Cos (62C); New buy: Piper Sandler Cos (PIPR); Add: Netflix INC (NFLX) — shares +2.00%; Add: Booking Holdings INC (BKNG) — shares +6096.52%; Add: Nvidia CORP (NVDA) — shares +1.58%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NFLX | Netflix INC | +0.7% | +2.00% | Add |
| 2 | BKNG | Booking Holdings INC | +0.7% | +6096.52% | Add |
| 3 | NVDA | Nvidia CORP | +0.5% | +1.58% | Add |
| 4 | DE | Deere & Co | +0.3% | -0.40% | Trim |
| 5 | GOOGL | Alphabet Inc-cl A | +0.2% | +1.15% | Add |
| 6 | VRTX | Vertex Pharmaceuticals INC | +0.2% | -0.74% | Trim |
| 7 | NVS | Novartis Ag-sponsored Adr | +0.2% | -1.95% | Trim |
| 8 | SBUX | Starbucks CORP | +0.2% | -1.08% | Trim |
| 9 | AMZN | Amazon.com INC | +0.1% | +2.02% | Add |
| 10 | MNST | Monster Beverage CORP | +0.1% | -1.38% | Trim |
| 11 | EXPE | Expedia Group INC | +0.1% | +415.82% | Add |
| 12 | TYL | Tyler Technologies INC | +0.1% | +560.14% | Add |
| 13 | ARM | Arm Holdings Plc-adr | +0.1% | +3.66% | Add |
| 14 | BA | Boeing Co/the | +0.1% | -0.69% | Trim |
| 15 | EXPD | Expeditors Intl Wash INC | +0.1% | -1.36% | Trim |
| 16 | SEIC | Sei Investments Company | +0.1% | -1.32% | Trim |
| 17 | GOOG | Alphabet Inc-cl C | 0% | -1.33% | Trim |
| 18 | XYZ | Block INC | 0% | -1.31% | Trim |
| 19 | SPGI | S&p Global INC | 0% | +6.03% | Add |
| 20 | ROP | Roper Technologies INC | 0% | -0.09% | Trim |
| 21 | JPM | Jpmorgan Chase & Co | 0% | -9.55% | Trim |
| 22 | NKE | Nike INC -cl B | -0.1% | -0.45% | Trim |
| 23 | DOCS | Doximity Inc-class A | -0.1% | +0.33% | Add |
| 24 | TMO | Thermo Fisher Scientific INC | -0.1% | -1.07% | Trim |
| 25 | BA 6 10-15-27 | Boeing Co/the | -0.1% | -92.88% | Trim |
| 26 | PYPL | Paypal Holdings INC | -0.1% | -1.49% | Trim |
| 27 | CMI | Cummins INC | -0.1% | -33.30% | Trim |
| 28 | TBBK | Bancorp Inc/the | -0.1% | -87.10% | Trim |
| 29 | BLK | Blackrock INC | -0.1% | -23.66% | Trim |
| 30 | HD | Home Depot INC | -0.1% | -31.68% | Trim |
| 31 | FDS | Factset Research Systems INC | -0.1% | -1.15% | Trim |
| 32 | DHR | Danaher CORP | -0.1% | -31.72% | Trim |
| 33 | MTD | Mettler-toledo International | -0.1% | -36.35% | Trim |
| 34 | ISRG | Intuitive Surgical INC | -0.1% | -0.92% | Trim |
| 35 | PH | Parker Hannifin CORP | -0.1% | -37.38% | Trim |
| 36 | DIS | Walt Disney Co/the | -0.1% | -1.34% | Trim |
| 37 | V | Visa Inc-class A Shares | -0.1% | +0.35% | Add |
| 38 | QCOM | Qualcomm INC | -0.2% | -1.48% | Trim |
| 39 | META | Meta Platforms Inc-class A | -0.2% | +0.58% | Add |
| 40 | ILMN | Illumina INC | -0.2% | -29.45% | Trim |
| 41 | WDAY | Workday Inc-class A | -0.2% | -0.80% | Trim |
| 42 | NVO | Novo-nordisk A/s-spons Adr | -0.2% | -0.69% | Trim |
| 43 | ADSK | Autodesk INC | -0.2% | -0.98% | Trim |
| 44 | CRM | Salesforce INC | -0.4% | -0.21% | Trim |
| 45 | ORCL | Oracle CORP | -0.5% | +3.94% | Add |
| 46 | MSFT | Microsoft CORP | -0.5% | +1.11% | Add |
| 47 | SHOP | Shopify INC - Class A | -0.5% | -0.46% | Trim |
| 48 | TSLA | Tesla INC | -0.5% | +0.04% | Add |
| 49 | 62C | Piper Sandler Cos | — | EXIT | Sold out |
| 50 | PIPR | Piper Sandler Cos | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-12 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-13 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-13 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-12 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-13 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-13 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-13 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-09 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | Amendment | View on EDGAR |
| 2023-03-31 | 2023-05-11 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-10 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-05 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-17 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-12 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-13 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-13 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-14 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-11 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-12 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-12 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-13 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-12 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-14 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-17 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-12-18 | Amendment | View on EDGAR |
| 2014-09-30 | 2014-11-14 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-15 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-12 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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