2026 Q1 Portfolio Activity
In 2026 Q1, LOOMIS SAYLES & CO L P maintained a portfolio of 785 distinct positions. The most significant new addition was PTC THERAPEUTICS INC, now representing 0.05% of the total fund value. They heavily accumulated shares in BOOKING HOLDINGS INC, increasing the position by 6096.5%. The fund also reduced its exposure to ILLUMINA INC by 29.5%.
Position History
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Total Positions
785
Quarter
2026 Q1
Top Holding
NVDA (9.6%)
Top 10 Concentration
52.3%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 785
LOOMIS SAYLES & CO L P Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NVDA
NVIDIA CORP
|
Technology | 9.61% | 9.07% |
#1
Prev: #1
|
6.3 |
—
|
636,374 | 1.6% |
P
S
|
40,977,042 | $7,146,396,157 | 1999 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
GOOGL
ALPHABET INC-CL...
|
Communication Services | 6.71% | 6.47% |
#2
1
Prev: #3
|
4.7 |
—
|
197,124 | 1.1% |
P
S
|
17,339,594 | $4,986,173,722 | 2015 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
TSLA
TESLA INC
|
Consumer Cyclical | 6.33% | 6.86% |
#3
1
Prev: #2
|
4.0 |
—
|
5,361 | 0.0% |
P
S
|
12,655,011 | $4,704,500,176 | 2013 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
META
META PLATFORMS ...
|
Communication Services | 5.73% | 5.89% |
#4
Prev: #4
|
3.3 |
—
|
43,118 | 0.6% |
P
S
|
7,450,101 | $4,262,426,364 | 2012 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
AMZN
AMAZON.COM INC
|
Consumer Cyclical | 5.13% | 5.00% |
#5
Prev: #5
|
3.1 |
—
|
362,660 | 2.0% |
P
S
|
18,325,770 | $3,816,708,151 | 1999 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
NFLX
NETFLIX.COM INC
|
Communication Services | 4.91% | 4.21% |
#6
Prev: #6
|
2.5 |
—
|
743,146 | 2.0% |
P
S
|
37,973,545 | $3,651,156,319 | 2002 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
BA
BOEING CO
|
Industrials | 3.77% | 3.71% |
#7
2
Prev: #9
|
2.0 |
—
|
-98,105 | -0.7% |
P
S
|
14,061,954 | $2,798,750,605 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
V
VISA INC-CLASS ...
|
Financial Services | 3.76% | 3.90% |
#8
1
Prev: #7
|
2.0 |
—
|
32,010 | 0.3% |
P
S
|
9,253,861 | $2,796,886,903 | 2008 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
ORCL
ORACLE CORP
|
Technology | 3.33% | 3.81% |
#9
1
Prev: #8
|
1.8 |
—
|
638,885 | 3.9% |
P
S
|
16,839,240 | $2,477,220,534 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
MSFT
MICROSOFT CORP
|
Technology | 3.02% | 3.50% |
#10
Prev: #10
|
1.7 |
—
|
66,645 | 1.1% |
P
S
|
6,063,327 | $2,244,461,854 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
MNST
MONSTER BEVERAG...
|
Consumer Defensive | 2.53% | 2.43% |
#11
1
Prev: #12
|
1.5 |
—
|
-363,343 | -1.4% |
P
S
|
25,905,224 | $1,877,092,508 | 2003 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
VRTX
VERTEX PHARMACE...
|
Healthcare | 2.41% | 2.20% |
#12
1
Prev: #13
|
1.5 |
—
|
-29,704 | -0.7% |
P
S
|
4,003,821 | $1,787,866,287 | 2000 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
SHOP
SHOPIFY INC - C...
|
Technology | 2.30% | 2.81% |
#13
2
Prev: #11
|
1.4 |
—
|
-66,724 | -0.5% |
P
S
|
14,403,445 | $1,708,536,588 | 2021 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
REGN
REGENERON PHARM...
|
Healthcare | 1.99% | 1.80% |
#14
3
Prev: #17
|
1.3 |
—
|
-22,016 | -1.1% |
P
S
|
1,912,310 | $1,477,527,279 | 2008 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
ADSK
AUTODESK INC
|
Technology | 1.85% | 2.07% |
#15
1
Prev: #14
|
1.2 |
—
|
-56,656 | -1.0% |
P
S
|
5,740,231 | $1,374,211,295 | 2003 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
DIS
THE WALT DISNEY...
|
Communication Services | 1.81% | 1.95% |
#16
1
Prev: #15
|
1.2 |
—
|
-189,943 | -1.3% |
P
S
|
13,991,645 | $1,348,514,766 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
CRM
SALESFORCE.COM ...
|
Technology | 1.52% | 1.94% |
#17
1
Prev: #16
|
1.1 |
—
|
-12,609 | -0.2% |
P
S
|
6,056,754 | $1,130,614,285 | 2005 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
SBUX
STARBUCKS CORP
|
Consumer Cyclical | 1.13% | 0.96% |
#18
5
Prev: #23
|
1.0 |
—
|
-102,308 | -1.1% |
P
S
|
9,376,448 | $840,035,994 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
NVS
NOVARTIS AG SPO...
|
Healthcare | 1.12% | 0.92% |
#19
5
Prev: #24
|
0.9 |
—
|
-108,115 | -2.0% |
P
S
|
5,426,100 | $828,836,811 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
GOOG
ALPHABET INC-CL...
|
Communication Services | 1.10% | 1.09% |
#20
1
Prev: #19
|
0.9 |
—
|
-38,303 | -1.3% |
P
S
|
2,847,659 | $816,879,453 | 2004 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
EXPD
EXPEDITORS INTL...
|
Industrials | 1.08% | 1.02% |
#21
Prev: #21
|
0.9 |
—
|
-77,680 | -1.4% |
P
S
|
5,614,806 | $804,208,660 | 1999 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 1.05% | 1.17% |
#22
4
Prev: #18
|
0.9 |
—
|
-15,794 | -0.9% |
P
S
|
1,699,693 | $783,541,361 | 2004 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
DE
DEERE & CO
|
Industrials | 1.04% | 0.77% |
#23
4
Prev: #27
|
0.9 |
—
|
-5,571 | -0.4% |
P
S
|
1,374,811 | $774,430,788 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
SEIC
SEI INVESTMENTS...
|
Financial Services | 0.91% | 0.86% |
#24
2
Prev: #26
|
0.9 |
—
|
-115,755 | -1.3% |
P
S
|
8,628,879 | $677,108,102 | 2002 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
TMO
THERMO FISHER S...
|
Healthcare | 0.90% | 0.96% |
#25
3
Prev: #22
|
0.9 |
—
|
-14,711 | -1.1% |
P
S
|
1,363,758 | $670,327,969 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
NVO
NOVO-NORDISK A/...
|
Healthcare | 0.84% | 1.05% |
#26
6
Prev: #20
|
0.8 |
—
|
-118,069 | -0.7% |
P
S
|
17,017,315 | $625,386,323 | 2000 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
YUM
YUM! BRANDS INC
|
Consumer Cyclical | 0.78% | 0.69% |
#27
1
Prev: #28
|
0.8 |
—
|
-43,481 | -1.1% |
P
S
|
3,741,574 | $581,739,862 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
QCOM
QUALCOMM INC
|
Technology | 0.73% | 0.88% |
#28
3
Prev: #25
|
0.8 |
—
|
-63,138 | -1.5% |
P
S
|
4,199,416 | $540,800,854 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
BKNG
BOOKING HOLDING...
|
Consumer Cyclical | 0.70% | 0.01% |
#29
324
Prev: #353
|
3.3 |
—
|
120,894 | 6096.5% |
P
S
|
122,877 | $517,351,491 | 2018 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
XYZ
BLOCK INC
|
Technology | 0.60% | 0.59% |
#30
1
Prev: #31
|
0.7 |
—
|
-98,390 | -1.3% |
P
S
|
7,423,669 | $446,756,397 | 2016 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
NKE
NIKE INC CL B
|
Consumer Cyclical | 0.56% | 0.61% |
#31
1
Prev: #30
|
0.7 |
—
|
-35,794 | -0.4% |
P
S
|
7,927,988 | $418,756,318 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
ILMN
ILLUMINA INC
|
Healthcare | 0.49% | 0.66% |
#32
3
Prev: #29
|
0.2 |
—
|
-1,228,743 | -29.5% |
P
S
|
2,942,977 | $362,751,403 | 2000 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
FDS
FACTSET RESEARC...
|
Financial Services | 0.43% | 0.52% |
#33
Prev: #33
|
0.7 |
—
|
-17,132 | -1.1% |
P
S
|
1,478,028 | $320,717,325 | 2003 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
MA
MASTERCARD INC-...
|
Financial Services | 0.41% | 0.40% |
#34
2
Prev: #36
|
0.7 |
—
|
28,489 | 4.9% |
P
S
|
615,244 | $307,412,817 | 2006 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
LSGR
NATIXIS LOOMIS ...
|
Unknown | 0.40% | 0.40% |
#35
3
Prev: #38
|
0.7 |
—
|
113,729 | 1.5% |
P
S
|
7,487,001 | $294,912,969 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
SPGI
S&P GLOBAL
|
Financial Services | 0.39% | 0.40% |
#36
1
Prev: #37
|
2.2 |
—
|
38,345 | 6.0% |
P
S
|
674,466 | $286,877,368 | 2016 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
PYPL
PAYPAL HOLDINGS...
|
Financial Services | 0.39% | 0.45% |
#37
3
Prev: #34
|
0.7 |
—
|
-95,417 | -1.5% |
P
S
|
6,327,407 | $286,188,603 | 2016 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
WDAY
WORKDAY INC
|
Technology | 0.36% | 0.54% |
#38
6
Prev: #32
|
0.6 |
—
|
-16,854 | -0.8% |
P
S
|
2,079,300 | $270,142,662 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
TSM
TAIWAN SEMICOND...
|
Technology | 0.30% | 0.29% |
#39
3
Prev: #42
|
0.6 |
—
|
-132,649 | -16.9% |
P
S
|
654,098 | $221,052,419 | 2000 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
HLT
HILTON WORLDWID...
|
Consumer Cyclical | 0.30% | 0.31% |
#40
Prev: #40
|
0.6 |
—
|
-178,982 | -19.8% |
P
S
|
725,695 | $220,669,336 | 2003 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
PH
PARKER HANNIFIN
|
Industrials | 0.29% | 0.41% |
#41
6
Prev: #35
|
0.1 |
—
|
-145,715 | -37.4% |
P
S
|
244,154 | $218,576,427 | 1999 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
TT
TRANE TECHNOLOG...
|
Industrials | 0.28% | 0.22% |
#42
12
Prev: #54
|
2.1 |
—
|
28,654 | 6.0% |
P
S
|
507,505 | $211,497,634 | 2020 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
YUMC
YUM CHINA HOLDI...
|
Consumer Cyclical | 0.28% | 0.25% |
#43
6
Prev: #49
|
0.6 |
—
|
-23,317 | -0.5% |
P
S
|
4,293,911 | $209,456,974 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
BLK
BLACKROCK INC
|
Financial Services | 0.27% | 0.35% |
#44
5
Prev: #39
|
0.1 |
—
|
-64,943 | -23.7% |
P
S
|
209,554 | $201,530,177 | 2001 Q3 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
ORLY
O'REILLY AUTOMO...
|
Consumer Cyclical | 0.26% | 0.27% |
#45
1
Prev: #46
|
0.6 |
—
|
-312,956 | -12.9% |
P
S
|
2,107,746 | $194,566,033 | 2011 Q4 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
COST
COSTCO WHOLESAL...
|
Consumer Defensive | 0.26% | 0.22% |
#46
10
Prev: #56
|
0.6 |
—
|
-18,511 | -8.8% |
P
S
|
192,642 | $191,954,269 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
JPM
JP MORGAN CHASE...
|
Financial Services | 0.25% | 0.28% |
#47
2
Prev: #45
|
0.6 |
—
|
-67,648 | -9.6% |
P
S
|
640,498 | $188,408,810 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
KLAC
KLA-TENCOR CORP...
|
Technology | 0.25% | 0.20% |
#48
9
Prev: #57
|
0.6 |
—
|
-13,453 | -9.7% |
P
S
|
124,783 | $183,731,737 | 1999 Q1 | 13F Filing | 2026-03-31 | 2026-05-14 | |||
|
N/A
ECHOSTAR CORP C...
|
|
Unknown | 0.25% | 0.25% |
#49
1
Prev: #48
|
0.6 |
—
|
-356,976 | -18.6% |
P
S
|
1,563,885 | $183,084,051 | — | 13F Filing | 2026-03-31 | 2026-05-14 | ||
|
CMI
CUMMINS ENGINE
|
Industrials | 0.24% | 0.31% |
#50
9
Prev: #41
|
0.1 |
—
|
-167,549 | -33.3% |
P
S
|
335,571 | $180,543,909 | 2006 Q2 | 13F Filing | 2026-03-31 | 2026-05-14 |
Showing 1-50 of 785 holdings