LOOMIS SAYLES & CO L P

BOSTON, MA · CIK 312348 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 1977 · limited partnership

Assets managed$386.9bn
Staff728 · 728 in investment roles
Main clients (by assets)Mutual funds and ETFs 27%, Pension plans 18%, Private funds 15%
Private funds5 (3 hedge) · $2.7bn gross assets
Form ADV · 2026-07-01SEC adviser record

Legal entityLOOMIS, SAYLES & COMPANY, L.P. (US)
Part of BPCE (FR)

Other 13F filers in this group: HARRIS ASSOCIATES L P $75.2bn, NATIXIS $21.1bn, VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. $11.3bn, GATEWAY INVESTMENT ADVISERS LLC $10.1bn, Mirova US LLC $9.3bn, OSSIAM $7.5bn, OSTRUM ASSET MANAGEMENT $2.1bn, DNCA FINANCE $2.1bn, AEW CAPITAL MANAGEMENT L P $1.7bn, VEGA INVESTMENT SOLUTIONS $704.5m

2 more

Natixis Investment Managers, LLC $173.2m, Natixis Investment Managers International last filed Q3 2025

$79.8bn reported value +7.3% vs Q1 2026

707positions

53.0%in top 10

82 new 245 added 338 reduced 93 sold out vs Q1 2026

This report includes the holdings of 1 other manager that shares the investment decisions:

LOOMIS SAYLES TRUST COMPANY, LLC – reports through this filing

Also in the report of:

NATIXIS ADVISORS, LLC – $270.9m of shares are in both reports
Police & Firemen's Retirement System of New Jersey – $16.2m of shares are in both reports
PERSONAL CFO SOLUTIONS, LLC – $14.4m of shares are in both reports

Shares in two reports are counted once in each security's totals.

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	NVIDIA CORPORATION COM NVDA	NVDA	39,501,911	$7.9bn9.91%	9.91%	Reduced -1.5m	-1,475,131 -3.6%
2	ALPHABET INC CAP STK CL A GOOGL	GOOGL	17,217,854	$6.2bn7.71%	7.71%	Reduced -121.7k	-121,740 -0.7%
3	TESLA INC COM TSLA	TSLA	12,679,478	$5.3bn6.68%	6.68%	Added +24.5k	+24,467 0.2%
4	AMAZON COM INC COM AMZN	AMZN	18,291,403	$4.4bn5.46%	5.46%	Reduced -34.4k	-34,367 -0.2%
5	META PLATFORMS INC CL A META	META	7,504,423	$4.2bn5.30%	5.30%	Added +54.3k	+54,322 0.7%
6	VISA INC COM CL A V	V	9,110,773	$3.1bn3.92%	3.92%	Reduced -143.1k	-143,088 -1.6%
7	BOEING CO COM BA	BA	13,915,261	$3.0bn3.78%	3.78%	Reduced -146.7k	-146,693 -1.0%
8	MICROSOFT CORP COM MSFT	MSFT	7,779,696	$2.9bn3.64%	3.64%	Added +1.7m	+1,716,369 28.3%
9	NETFLIX INC COM NFLX	NFLX	40,017,462	$2.9bn3.58%	3.58%	Added +2.0m	+2,043,917 5.4%
10	ORACLE CORP COM ORCL	ORCL	16,698,361	$2.4bn3.07%	3.07%	Reduced -140.9k	-140,879 -0.8%
11	MONSTER BEVERAGE CORP NEW COM MNST	MNST	24,849,175	$2.4bn2.99%	2.99%	Reduced -1.1m	-1,056,049 -4.1%
12	VERTEX PHARMACEUTICALS INC COM VRTX	VRTX	3,920,953	$1.9bn2.44%	2.44%	Reduced -82.9k	-82,868 -2.1%
13	SHOPIFY INC CL A SUB VTG SHS SHOP	SHOP	14,408,186	$1.6bn2.06%	2.06%	Added +4.7k	+4,741 0.0%
14	DISNEY WALT CO COM DIS	DIS	13,574,038	$1.3bn1.64%	1.64%	Reduced -417.6k	-417,607 -3.0%
15	AUTODESK INC COM ADSK	ADSK	6,335,468	$1.2bn1.54%	1.54%	Added +595.2k	+595,237 10.4%
16	REGENERON PHARMACEUTICALS COM REGN	REGN	1,859,172	$1.2bn1.45%	1.45%	Reduced -53.1k	-53,138 -2.8%
17	SALESFORCE INC COM CRM	CRM	6,452,463	$1.0bn1.27%	1.27%	Added +395.7k	+395,709 6.5%
18	ALPHABET INC CAP STK CL C GOOG	GOOG	2,716,368	$959.8m1.20%	1.20%	Reduced -131.3k	-131,291 -4.6%
19	STARBUCKS CORP COM SBUX	SBUX	9,132,297	$933.2m1.17%	1.17%	Reduced -244.2k	-244,151 -2.6%
20	EXPEDITORS INTL WASH INC COM EXPD	EXPD	5,497,102	$895.9m1.12%	1.12%	Reduced -117.7k	-117,704 -2.1%
21	NOVO-NORDISK A S ADR NVO	NVO	18,594,352	$891.4m1.12%	1.12%	Added +1.6m	+1,577,037 9.3%
22	DEERE & CO COM DE	DE	1,367,369	$867.4m1.09%	1.09%	Reduced -7.4k	-7,442 -0.5%
23	NOVARTIS AG SPONSORED ADR NVS	NVS	5,239,309	$821.1m1.03%	1.03%	Reduced -186.8k	-186,791 -3.4%
24	SEI INVTS CO COM SEIC	SEIC	8,482,052	$744.0m0.93%	0.93%	Reduced -146.8k	-146,827 -1.7%
25	THERMO FISHER SCIENTIFIC INC COM TMO	TMO	1,315,185	$659.4m0.83%	0.83%	Reduced -48.6k	-48,573 -3.6%
26	INTUITIVE SURGICAL INC COM NEW ISRG	ISRG	1,656,156	$658.6m0.83%	0.83%	Reduced -43.5k	-43,537 -2.6%
27	BOOKING HOLDINGS INC COM BKNG	BKNG	3,414,019	$608.5m0.76%	0.76%	Added +342.1k	+342,094 11.1%
28	YUM BRANDS INC COM YUM	YUM	3,673,461	$587.2m0.74%	0.74%	Reduced -68.1k	-68,113 -1.8%
29	BLOCK INC CL A XYZ	XYZ	7,340,417	$557.9m0.70%	0.70%	Reduced -83.3k	-83,252 -1.1%
30	MASTERCARD INCORPORATED CL A MA	MA	726,071	$372.9m0.47%	0.47%	Added +110.8k	+110,827 18.0%
31	NATIXIS ETF TRUST II NATIXIS LOOMIS LSGR	LSGR	8,087,491	$340.7m0.43%	0.43%	Added +600.5k	+600,490 8.0%
32	ILLUMINA INC COM ILMN	ILMN	1,931,948	$339.7m0.43%	0.43%	Reduced -1.0m	-1,011,029 -34.4%
33	S&P GLOBAL INC COM SPGI	SPGI	813,725	$331.4m0.42%	0.42%	Added +139.3k	+139,259 20.6%
34	FACTSET RESH SYS INC COM FDS	FDS	1,439,274	$331.1m0.42%	0.42%	Reduced -38.8k	-38,754 -2.6%
35	BROADCOM INC COM AVGO	AVGO	871,078	$329.0m0.41%	0.41%	Added +808.1k	+808,131 1283.8%
36	NIKE INC CL B NKE	NKE	7,806,708	$320.5m0.40%	0.40%	Reduced -121.3k	-121,280 -1.5%
37	TRANE TECHNOLOGIES PLC SHS TT	TT	591,726	$290.6m0.36%	0.36%	Added +84.2k	+84,221 16.6%
38	WORKDAY INC CL A WDAY	WDAY	2,295,182	$281.0m0.35%	0.35%	Added +215.9k	+215,882 10.4%
39	ARM HOLDINGS PLC SPONSORED ADS ARM	ARM	785,168	$278.4m0.35%	0.35%	Reduced -75.1k	-75,094 -8.7%
40	CUMMINS INC COM CMI	CMI	355,936	$253.9m0.32%	0.32%	Added +20.4k	+20,365 6.1%
41	TAIWAN SEMICONDUCTOR MFG LTD SPONSORED ADS TSM	TSM	486,273	$232.2m0.29%	0.29%	Reduced -167.8k	-167,825 -25.7%
42	KLA CORP COM NEW KLAC	KLAC	769,321	$232.1m0.29%	0.29%	Reduced -478.5k	-478,509 -38.4%
43	MERCADOLIBRE INC COM MELI	MELI	124,382	$211.1m0.26%	0.26%	Added +33.2k	+33,157 36.4%
44	PARKER-HANNIFIN CORP COM PH	PH	208,634	$204.1m0.26%	0.26%	Reduced -35.5k	-35,520 -14.6%
45	HILTON WORLDWIDE HLDGS INC COM HLT	HLT	607,632	$200.8m0.25%	0.25%	Reduced -118.1k	-118,063 -16.3%
46	GOLDMAN SACHS GROUP INC COM GS	GS	191,453	$193.6m0.24%	0.24%	Reduced -21.7k	-21,732 -10.2%
47	BLACKROCK INC COM BLK	BLK	198,459	$190.8m0.24%	0.24%	Reduced -11.1k	-11,095 -5.3%
48	JPMORGAN CHASE & CO COM JPM	JPM	582,767	$190.8m0.24%	0.24%	Reduced -57.7k	-57,731 -9.0%
49	OREILLY AUTOMOTIVE INC COM ORLY	ORLY	2,035,771	$187.5m0.23%	0.23%	Reduced -72.0k	-71,975 -3.4%
50	ALNYLAM PHARMACEUTICALS INC COM ALNY	ALNY	580,187	$174.7m0.22%	0.22%	Added +68.1k	+68,090 13.3%
51	COSTCO WHSL CORP NEW COM COST	COST	178,361	$166.9m0.21%	0.21%	Reduced -14.3k	-14,281 -7.4%
52	PROGRESSIVE CORP COM PGR	PGR	737,746	$161.2m0.20%	0.20%	Reduced -23.1k	-23,131 -3.0%
53	AIRBNB INC COM CL A ABNB	ABNB	915,294	$131.0m0.16%	0.16%	Reduced -209.5k	-209,525 -18.6%
54	RBC BEARINGS INC COM RBC	RBC	192,977	$124.3m0.16%	0.16%	Reduced -11.1k	-11,055 -5.4%
55	HOME DEPOT INC COM HD	HD	339,950	$119.9m0.15%	0.15%	Reduced -119.1k	-119,102 -25.9%
56	ADVANCED ENERGY INDS COM AEIS	AEIS	318,553	$118.8m0.15%	0.15%	Reduced -17.8k	-17,798 -5.3%
57	LINDE PLC SHS LIN	LIN	222,955	$115.7m0.15%	0.15%	Reduced -86.0k	-86,050 -27.9%
58	ATI INC COM ATI	ATI	581,326	$114.6m0.14%	0.14%	Reduced -72.1k	-72,090 -11.0%
59	ALLEGRO MICROSYSTEMS INC COM ALGM	ALGM	1,619,931	$112.8m0.14%	0.14%	Reduced -54.2k	-54,177 -3.2%
60	LIFE TIME GROUP HOLDINGS INC COMMON STOCK LTH	LTH	2,447,594	$100.0m0.13%	0.13%	Reduced -135.0k	-134,977 -5.2%
61	ROPER TECHNOLOGIES INC COM ROP	ROP	294,586	$99.7m0.12%	0.12%	Reduced -137.2k	-137,193 -31.8%
62	MAREX GROUP PLC ORD 96665EUR	96665EUR	1,626,702	$99.1m0.12%	0.12%	Reduced -291.9k	-291,920 -15.2%
63	DANAHER CORPORATION COM DHR	DHR	516,918	$98.5m0.12%	0.12%	Reduced -39.9k	-39,935 -7.2%
64	ARCOSA INC COM ACA	ACA	666,203	$96.8m0.12%	0.12%	Reduced -126.9k	-126,873 -16.0%
65	METTLER TOLEDO INTERNATIONAL COM MTD	MTD	74,525	$95.2m0.12%	0.12%	Reduced -32.9k	-32,921 -30.6%
66	LIGAND PHARMACEUTICALS INC COM NEW LGND	LGND	291,805	$92.2m0.12%	0.12%	Reduced -61.4k	-61,404 -17.4%
67	UNITEDHEALTH GROUP INC COM UNH	UNH	218,190	$90.7m0.11%	0.11%	Added +51.6k	+51,601 31.0%
68	ESCO TECHNOLOGIES INC COM ESE	ESE	256,813	$89.9m0.11%	0.11%	Reduced -43.9k	-43,940 -14.6%
69	TWIST BIOSCIENCE CORP COM TWST	TWST	861,309	$88.6m0.11%	0.11%	Added +369.0k	+369,019 75.0%
70	MOOG INC CL A MOG.A	MOG.A	204,728	$86.8m0.11%	0.11%	Reduced -6.3k	-6,335 -3.0%
71	AMBEV SA SPONSORED ADR ABEV	ABEV	27,000,448	$84.8m0.11%	0.11%	Added +6.5m	+6,509,817 31.8%
72	MERCURY SYS INC COM MRCY	MRCY	681,142	$83.3m0.10%	0.10%	Added +35.2k	+35,210 5.5%
73	AAR CORP COM AIR	AIR	582,574	$83.3m0.10%	0.10%	Reduced -56.3k	-56,311 -8.8%
74	ALKERMES PLC SHS ALKS	ALKS	1,585,518	$83.1m0.10%	0.10%	Reduced -199.1k	-199,063 -11.2%
75	EXTREME NETWORKS COM EXTR	EXTR	2,536,716	$82.1m0.10%	0.10%	Reduced -179.0k	-178,967 -6.6%
76	HEXCEL CORP NEW COM HXL	HXL	820,224	$82.1m0.10%	0.10%	Added +14.7k	+14,711 1.8%
77	HEALTHEQUITY INC COM HQY	HQY	908,554	$82.1m0.10%	0.10%	Reduced -23.4k	-23,352 -2.5%
78	UBER TECHNOLOGIES INC NOTE 0.875%12/0 UBER 0.875 12.01.28 2028	UBER 0.875 12.01.28 2028	1,131,484	$81.6m0.10%	0.10%	Added +952.1k	+952,075 530.7%
79	MACOM TECH SOLUTIONS HLDGS I COM MTSI	MTSI	206,610	$78.6m0.10%	0.10%	Reduced -115.8k	-115,849 -35.9%
80	ALPHABET INC DEP SHS RP1/20 B GOOGL 6.25 05.15.29 B	GOOGL 6.25 05.15.29 B	206,029	$72.8m0.09%	0.09%	New
81	TD SYNNEX CORPORATION COM SNX	SNX	263,832	$70.5m0.09%	0.09%	Reduced -18.0k	-17,986 -6.4%
82	MYR GROUP INC DEL COM MYRG	MYRG	140,594	$70.4m0.09%	0.09%	Reduced -29.5k	-29,465 -17.3%
83	YUM CHINA HLDGS INC COM YUMC	YUMC	1,712,698	$70.0m0.09%	0.09%	Reduced -2.6m	-2,581,213 -60.1%
84	SUPERNUS PHARMACEUTICALS INC COM SUPN	SUPN	1,475,192	$68.6m0.09%	0.09%	Added +49.4k	+49,413 3.5%
85	APPLOVIN CORP COM CL A APP	APP	130,535	$67.3m0.08%	0.08%	Added +128.0k	+127,991 5031.1%
86	ITT INC COM ITT	ITT	337,957	$66.8m0.08%	0.08%	Reduced -9.6k	-9,557 -2.8%
87	EVERUS CONSTR GROUP COM ECG	ECG	401,870	$66.7m0.08%	0.08%	Reduced -28.7k	-28,678 -6.7%
88	STERLING INFRASTRUCTURE INC COM STRL	STRL	79,362	$66.6m0.08%	0.08%	Reduced -82.3k	-82,344 -50.9%
89	VITA COCO CO INC COM COCO	COCO	1,001,278	$66.2m0.08%	0.08%	Reduced -71.4k	-71,371 -6.7%
90	GLAUKOS CORP COM GKOS	GKOS	469,388	$65.6m0.08%	0.08%	Added +48.1k	+48,148 11.4%
91	OCEANEERING INTL INC COM OII	OII	1,606,095	$65.1m0.08%	0.08%	Reduced -94.2k	-94,194 -5.5%
92	YETI HLDGS INC COM YETI	YETI	1,298,563	$64.4m0.08%	0.08%	Reduced -17.5k	-17,532 -1.3%
93	ALPHABET INC DEP SHS RP1/20 A GOOGL 6.25 05.15.29 A	GOOGL 6.25 05.15.29 A	178,094	$63.6m0.08%	0.08%	New
94	TRIP COM GROUP LTD ADS TCOM	TCOM	1,586,606	$63.2m0.08%	0.08%	Added +610.4k	+610,395 62.5%
95	RAMBUS INC DEL COM RMBS	RMBS	470,934	$62.5m0.08%	0.08%	Reduced -188.9k	-188,901 -28.6%
96	LEGENCE CORP CL A LGN	LGN	732,152	$62.4m0.08%	0.08%	Reduced -168.5k	-168,505 -18.7%
97	BOOT BARN HLDGS INC COM BOOT	BOOT	370,419	$60.8m0.08%	0.08%	Reduced -13.4k	-13,437 -3.5%
98	CONSTRUCTION PARTNERS INC COM CL A ROAD	ROAD	505,741	$60.1m0.08%	0.08%	Reduced -36.1k	-36,101 -6.7%
99	NXP SEMICONDUCTORS N V COM NXPI	NXPI	210,202	$59.1m0.07%	0.07%	Added +31.6k	+31,616 17.7%
100	ISHARES TR RUS 1000 GRW ETF IWF	IWF	475,532	$59.0m0.07%	0.07%	Added +166.1k	+166,120 53.7%

Sold out since Q1 2026

Security	Ticker	Shares held before	Value then
SILICON LABORATORIES INC SLAB	SLAB	223,342	$46.5m223.3k shares
CRISPR THERAPEUTICS AG CRSP	CRSP	968,135	$46.1m968.1k shares
ARTIVION INC AORT	AORT	980,439	$35.9m980.4k shares
INSMED INC INSM	INSM	194,982	$31.9m195.0k shares
EVERTEC INC EVTC	EVTC	1,024,262	$28.9m1.0m shares
SITEONE LANDSCAPE SUPPLY INC SITE	SITE	213,098	$28.4m213.1k shares
KRATOS DEFENSE & SEC SOLUTIO KTOS	KTOS	382,466	$27.0m382.5k shares
ITRON INC ITRI	ITRI	287,930	$25.8m287.9k shares
INSTALLED BLDG PRODS INC IBP	IBP	96,228	$25.5m96.2k shares
CARGURUS INC CARG	CARG	729,016	$24.8m729.0k shares
CADRE HLDGS INC CDRE	CDRE	615,546	$18.9m615.5k shares
ASCENDIS PHARMA A/S		80,405	$18.4m80.4k shares
VIRIDIAN THERAPEUTICS INC VRDN	VRDN	927,717	$18.1m927.7k shares
PLANET FITNESS INC PLNT	PLNT	221,343	$16.5m221.3k shares
BJS WHSL CLUB HLDGS INC BJ	BJ	165,143	$16.3m165.1k shares
ESAB CORPORATION ESAB	ESAB	160,152	$15.5m160.2k shares
NATIONAL VISION HLDGS INC EYE	EYE	584,038	$15.1m584.0k shares
DUPONT DE NEMOURS INC DWDP	DWDP	109,166	$15.0m109.2k shares
GRANITE CONSTR INC GVA 3.75 05.15.28	GVA 3.75 05.15.28	107,753	$12.9m107.8k shares
OLLIES BARGAIN OUTLET HLDGS OLLI	OLLI	132,362	$12.2m132.4k shares
STAG INDL INC STAG	STAG	324,953	$11.7m325.0k shares
TOPBUILD CORP BLD	BLD	27,632	$9.7m27.6k shares
NCINO INC NCNO	NCNO	477,546	$7.2m477.5k shares
ALTICE USA INC OPTU	OPTU	5,084,853	$6.6m5.1m shares
ISHARES TR HYG	HYG	81,550	$6.5m81.5k shares

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
SEI INVTS CO SEIC · 13G · filed 2026-08-14	SEIC	7.0%≈ $742.2m	-0.1 pts	13G	2026-08-14