LOOMIS SAYLES & CO L P

CIK

312348

Location

BOSTON, MA

Portfolio Value

Large $71,857,270,697

Diversification

Diversified

Filing Date

Global Rank

#100 / 8,603 ▼ 9 · as of Mar 2026

Top Industry

Internet Content & Information 12.9%

3Y Alpha vs SPY

-5.2%

Period ended 3 months ago

Filed May 14, 2026 · 56d

25 quarters · since Mar 2020

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+53.4%

SPY

+76.5%

Annualised alpha

-5.5%

Max drawdown

−23.8%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

633 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

9.9%

+0.6 pts

Top 5

34.7%

+0.5 pts

Top 10

54.1%

+0.2 pts

HHI

377

Diversified+7

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	27.1%	$19,456,656,633	111
Communication Services	20.0%	$14,372,355,010	19
Consumer Cyclical	17.4%	$12,533,736,761	70
Healthcare	12.1%	$8,670,122,585	98
Industrials	9.8%	$7,053,951,887	111
Financial Services	8.9%	$6,395,892,222	93
Consumer Defensive	3.3%	$2,397,481,747	29
Energy	0.5%	$387,848,508	24
Basic Materials	0.5%	$342,215,908	20
Real Estate	0.2%	$132,017,091	36
Utilities	0.1%	$104,075,313	19
Unclassified	0.0%	$10,917,032	3

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

25 positions

Ticker	Company	Δ Shares	Shares	Value
ABEV	Ambev S.A.	+1,189,814	20,490,631	$59,832,642
ALGM	Allegro Microsystems, Inc.	+844,869	1,674,108	$52,784,624
NFLX	Netflix Inc	+743,146	37,973,545	$3,651,156,351
INTA	Intapp, Inc.	+681,108	682,467	$17,532,576
ORCL	Oracle Corp	+638,885	16,839,240	$2,477,220,596
NVDA	Nvidia Corp	+636,374	40,977,042	$7,146,396,124
JHX	James Hardie Industries plc	+487,089	521,466	$9,876,565
PIPR	Piper Sandler Companies	+391,075	536,352	$41,057,744
AMZN	Amazon Com Inc	+362,660	18,325,770	$3,816,708,117
PDFS	Pdf Solutions Inc	+361,927	827,109	$27,054,734
WT	WisdomTree, Inc.	+323,696	1,662,823	$24,210,702
EXPE	Expedia Group, Inc.	+315,518	391,396	$90,369,421
NEO	Neogenomics Inc	+314,253	1,945,388	$14,434,778
SF	Stifel Financial Corp	+305,793	673,597	$49,792,289
EYE	National Vision Holdings, Inc.	+302,571	584,038	$15,126,583
GRDN	Guardian Pharmacy Services, Inc.	+296,068	931,689	$35,087,407
EXTR	Extreme Networks Inc	+227,535	2,715,683	$40,952,499
FLOC	Flowco Holdings Inc.	+224,478	945,827	$19,484,035
LEVI	Levi Strauss & Co	+212,914	754,748	$13,955,289
PGNY	Progyny, Inc.	+212,810	988,390	$16,782,861
GOOGL	Alphabet Inc.	+197,124	17,339,594	$4,986,173,649
LOB	Live Oak Bancshares, Inc.	+169,719	728,129	$24,079,225
TYL	Tyler Technologies Inc	+161,097	189,857	$65,003,239
PGR	Progressive Corp/Oh/	+156,769	760,877	$150,836,256
AORT	Artivion, Inc.	+140,377	980,439	$35,903,675
No positions match the current search.

Trimmed

Positions the filer reduced

25 positions

Ticker	Company	Δ Shares	Shares	Value
NOMD	Nomad Foods Ltd	−1,765,894	90,833	$872,905
FWRG	First Watch Restaurant Group, Inc.	−1,546,072	311,740	$3,267,034
ILMN	Illumina, Inc.	−1,228,743	2,942,977	$362,751,344
PD	PagerDuty, Inc.	−1,045,051	47,912	$297,533
TBBK	Bancorp, Inc.	−903,701	133,862	$7,192,404
FIVN	Five9, Inc.	−877,673	37,195	$564,248
STVN	Stevanato Group S.p.A.	−730,376	57,904	$796,180
VRDN	Viridian Therapeutics, Inc.\DE	−553,418	927,717	$18,146,144
AR	ANTERO RESOURCES Corp	−501,820	421,210	$17,876,152
CNXC	Concentrix Corp	−479,217	21,124	$577,952
MNST	Monster Beverage Corp	−363,343	25,905,224	$1,877,092,530
ORLY	O Reilly Automotive Inc	−312,956	2,107,746	$194,566,033
FROG	JFrog Ltd	−296,866	415,899	$19,518,139
DAN	DANA Inc	−289,384	1,302,384	$43,825,221
ATI	Ati Inc	−282,257	653,416	$95,045,890
DHR	Danaher Corp /De/	−258,672	556,853	$105,579,328
TTMI	Ttm Technologies Inc	−254,055	535,996	$52,216,729
SLAB	Silicon Laboratories Inc.	−240,723	223,342	$46,488,637
HD	Home Depot, Inc.	−212,907	459,052	$150,977,612
IBN	Icici Bank Ltd	−211,612	108,461	$2,809,139
MRCY	Mercury Systems Inc	−205,885	645,932	$47,094,901
KTOS	Kratos Defense & Security Solutions, Inc.	−196,720	382,466	$26,967,677
KNF	Knife River Corp	−190,072	218,864	$17,870,245
DIS	Walt Disney Co	−189,943	13,991,645	$1,348,514,744
TNL	Travel & Leisure Co.	−187,680	27,482	$1,901,479
No positions match the current search.

New Positions

Positions the filer opened this quarter

25 positions

Ticker	Company	Shares	Value
PTCT	Ptc Therapeutics, Inc.	493,603	$33,629,171
ADEA	Adeia Inc.	1,333,941	$32,054,602
TWST	Twist Bioscience Corp	492,290	$23,393,620
JQC	Nuveen Credit Strategies Income Fund	4,526,488	$22,043,996
JFR	Nuveen Floating Rate Income Fund	2,897,039	$21,785,732
SIMO	Silicon Motion Technology CORP	188,653	$21,183,844
SGHC	Super Group (SGHC) Ltd	1,867,557	$20,169,615
FTRE	Fortrea Holdings Inc.	1,822,769	$17,170,483
ONTO	Onto Innovation Inc.	81,072	$16,625,434
INVX	Innovex International, Inc.	671,309	$16,373,226
WBI	WaterBridge Infrastructure LLC	600,602	$16,090,127
UCTT	Ultra Clean Holdings, Inc.	231,058	$14,367,186
APTV	Aptiv PLC	202,106	$14,034,240
POOL	Pool Corp	67,256	$13,607,906
FFBC	First Financial Bancorp /Oh/	474,824	$13,238,092
JKHY	Jack Henry & Associates Inc	80,173	$12,670,540
TECH	BIO-TECHNE Corp	236,142	$12,340,780
ESI	Element Solutions Inc	356,807	$12,181,390
LCII	Lci Industries	97,941	$12,044,783
WAY	Waystar Holding Corp.	493,203	$11,891,123
BC	Brunswick Corp	163,222	$11,876,031
NTAP	NetApp, Inc.	112,235	$11,491,741
GXO	GXO Logistics, Inc.	219,142	$11,362,512
TREX	Trex Co Inc	292,831	$10,664,904
EPAC	Enerpac Tool Group Corp	282,943	$10,318,930
No positions match the current search.

Sold Out

Positions the filer fully exited

25 positions

Ticker	Company	Shares	Value
WVE	Wave Life Sciences Ltd.	2,040,223	$34,683,791
CMG	Chipotle Mexican Grill Inc	925,467	$34,242,279
ADBE	Adobe Inc.	95,127	$33,293,498
BLDR	Builders FirstSource, Inc.	295,627	$30,417,062
STEP	StepStone Group Inc.	381,770	$24,498,180
RPC	Ridgepost Capital, Inc.	1,900,991	$18,648,721
LIF	Life360, Inc.	280,074	$17,963,945
EXLS	ExlService Holdings, Inc.	384,887	$16,334,604
HAE	Haemonetics Corp	154,247	$12,362,897
KD	Kyndryl Holdings, Inc.	390,593	$10,374,150
KBH	Kb Home	182,047	$10,269,270
VYX	NCR Voyix Corp	966,435	$9,857,636
PXED	Phoenix Education Partners, Inc.	237,333	$7,191,189
ADUS	Addus HomeCare Corp	63,017	$6,767,395
IIIV	i3 Verticals, Inc.	268,245	$6,757,090
LMB	Limbach Holdings, Inc.	77,354	$6,022,008
BRBR	Bellring Brands, Inc.	209,085	$5,588,841
ES	Eversource Energy	52,696	$3,548,021
DASH	DoorDash, Inc.	12,984	$2,940,616
BX	Blackstone Inc.	18,781	$2,894,902
ROK	Rockwell Automation, Inc	4,178	$1,625,534
CPNG	Coupang, Inc.	67,098	$1,582,841
SANM	Sanmina Corp	10,033	$1,505,652
CRDO	Credo Technology Group Holding Ltd	8,955	$1,288,534
S	SentinelOne, Inc.	85,543	$1,283,145
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

633 positions · $71,857,270,697 total · as of Mar 31, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Real Estate Technology Utilities

Showing 1–50 of 633 positions by value · page 1 of 13

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
NVDA	Nvidia Corp Technology	Added	40,977,042	+636,374	$7,146,396,124	−5.0%	9.95%
GOOGL	Alphabet Inc. Communication Services	Added	17,339,594	+197,124	$4,986,173,649	−7.1%	6.94%
TSLA	Tesla, Inc. Consumer Cyclical	Added	12,655,011	+5,361	$4,704,500,338	−17.3%	6.55%
META	Meta Platforms, Inc. Communication Services	Added	7,450,101	+43,118	$4,262,426,284	−12.8%	5.93%
AMZN	Amazon Com Inc Consumer Cyclical	Added	18,325,770	+362,660	$3,816,708,117	−7.9%	5.31%
NFLX	Netflix Inc Communication Services	Added	37,973,545	+743,146	$3,651,156,351	+4.6%	5.08%
BA	Boeing Co Industrials	Reduced	14,061,954	-98,105	$2,798,750,703	−9.0%	3.89%
V	Visa Inc. Financial Services	Added	9,253,861	+32,010	$2,796,886,948	−13.5%	3.89%
ORCL	Oracle Corp Technology	Added	16,839,240	+638,885	$2,477,220,596	−21.5%	3.45%
MSFT	Microsoft Corp Technology	Added	6,063,327	+66,645	$2,244,461,755	−22.6%	3.12%
MNST	Monster Beverage Corp Consumer Defensive	Reduced	25,905,224	-363,343	$1,877,092,530	−6.8%	2.61%
VRTX	Vertex Pharmaceuticals Inc / Ma Healthcare	Reduced	4,003,821	-29,704	$1,787,866,229	−2.2%	2.49%
SHOP	Shopify Inc. Technology	Reduced	14,403,445	-66,724	$1,708,536,645	−26.6%	2.38%
REGN	Regeneron Pharmaceuticals, Inc. Healthcare	Reduced	1,912,310	-22,016	$1,477,527,197	−1.0%	2.06%
ADSK	Autodesk, Inc. Technology	Reduced	5,740,231	-56,656	$1,374,211,300	−19.9%	1.91%
DIS	Walt Disney Co Communication Services	Reduced	13,991,645	-189,943	$1,348,514,744	−16.4%	1.88%
CRM	Salesforce, Inc. Technology	Reduced	6,056,754	-12,609	$1,130,614,268	−29.7%	1.57%
SBUX	Starbucks Corp Consumer Cyclical	Reduced	9,376,448	-102,308	$840,035,976	+5.2%	1.17%
NVS	Novartis AG Healthcare	Reduced	5,426,100	-108,115	$828,836,774	+8.6%	1.15%
EXPD	Expeditors International Of Washington Inc Industrials	Reduced	5,614,806	-77,680	$804,208,663	−5.2%	1.12%
ISRG	Intuitive Surgical Inc Healthcare	Reduced	1,699,693	-15,794	$783,541,475	−19.4%	1.09%
DE	Deere & Co Industrials	Reduced	1,374,811	-5,571	$774,431,035	+20.5%	1.08%
SEIC	Sei Investments Co Financial Services	Reduced	8,628,879	-8,924,600	$677,108,134	−53.0%	0.94%
TMO	Thermo Fisher Scientific Inc. Healthcare	Reduced	1,363,758	-14,711	$670,327,969	−16.1%	0.93%
NVO	Novo Nordisk A S Healthcare	Reduced	17,017,315	-118,069	$625,386,326	−28.3%	0.87%
YUM	Yum Brands Inc Consumer Cyclical	Reduced	3,741,574	-43,481	$581,739,925	+1.6%	0.81%
QCOM	Qualcomm Inc/De Technology	Reduced	4,199,416	-63,138	$540,800,791	−25.8%	0.75%
XYZ	Block, Inc. Technology	Reduced	7,423,669	-98,390	$446,756,399	−8.8%	0.62%
NKE	NIKE, Inc. Consumer Cyclical	Reduced	7,927,988	-35,794	$418,756,325	−17.5%	0.58%
ILMN	Illumina, Inc. Healthcare	Reduced	2,942,977	-1,228,743	$362,751,344	−33.7%	0.50%
FDS	Factset Research Systems Inc Financial Services	Reduced	1,478,028	-17,132	$320,717,295	−26.1%	0.45%
MA	Mastercard Inc Financial Services	Added	615,244	+28,489	$307,412,816	−8.2%	0.43%
PYPL	PayPal Holdings, Inc. Financial Services	Reduced	6,327,407	-95,417	$286,188,618	−23.7%	0.40%
SPGI	S&P Global Inc. Financial Services	Added	674,466	+38,345	$271,407,141	−13.7%	0.38%
WDAY	Workday, Inc. Technology	Reduced	2,079,300	-16,854	$270,142,655	−40.0%	0.38%
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	Reduced	654,098	-132,649	$221,052,418	−7.5%	0.31%
HLT	Hilton Worldwide Holdings Inc. Consumer Cyclical	Reduced	725,695	-178,982	$220,669,335	−15.1%	0.31%
PH	Parker-Hannifin Corp Industrials	Reduced	244,154	-145,715	$218,576,426	−36.2%	0.30%
TT	Trane Technologies plc Industrials	Added	507,505	+28,654	$211,497,633	+13.5%	0.29%
YUMC	Yum China Holdings, Inc. Consumer Cyclical	Reduced	4,293,911	-23,317	$209,456,978	+1.6%	0.29%
BLK	BlackRock, Inc. Financial Services	Reduced	209,554	-64,943	$201,530,177	−31.4%	0.28%
ORLY	O Reilly Automotive Inc Consumer Cyclical	Reduced	2,107,746	-312,956	$194,566,033	−11.9%	0.27%
COST	Costco Wholesale Corp /New Consumer Defensive	Reduced	192,642	-18,511	$191,954,267	+5.4%	0.27%
JPM	Jpmorgan Chase & Co Financial Services	Reduced	640,498	-67,648	$188,408,891	−17.4%	0.26%
CMI	Cummins Inc Industrials	Reduced	335,571	-167,549	$180,543,909	−29.7%	0.25%
GS	Goldman Sachs Group Inc Financial Services	Reduced	213,185	-35,421	$180,352,378	−17.5%	0.25%
ALNY	Alnylam Pharmaceuticals, Inc. Healthcare	Added	512,097	+23,200	$169,437,533	−12.8%	0.24%
MELI	Mercadolibre Inc Consumer Cyclical	Added	91,225	+693	$157,729,849	−13.5%	0.22%
LIN	Linde PLC Basic Materials	Reduced	309,005	-134,298	$153,192,318	−19.0%	0.21%
ROP	Roper Technologies Inc Technology	Reduced	431,779	-394	$152,789,316	−20.6%	0.21%