Wellesley Asset Management — 13F Holdings

2026 Q1  ·  66 Positions

2026 Q1 Portfolio Activity

In 2026 Q1, Wellesley Asset Management maintained a portfolio of 66 distinct positions. They heavily accumulated shares in BOX US, increasing the position by 5293.2%. Conversely, Wellesley Asset Management completely exited their position in HAE US.
Position History hover any row below to update
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Wellesley Asset Management Wellesley, MA RIA AUM $953M
Fund Overview SEC EDGAR
PCA Score Concentration Risk
Risk ENB
To Excel To CSV
Total Positions
66
Quarter
2026 Q1
Top Holding
N/A (4.8%)
Top 10 Concentration
37.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 66
Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
N/A
BOX US
—
Unknown 4.76% 4.29% #1 1
Prev: #2
6.9
—
21,298,000 71.3%
P
S
51,181,000 $45,329,636 — 13F Filing 2026-03-31 2026-05-11
N/A
VSH US
—
Unknown 4.15% 3.71% #2 5
Prev: #7
6.2
—
13,998,000 51.3%
P
S
41,311,000 $39,561,775 — 13F Filing 2026-03-31 2026-05-11
N/A
SYNA US
—
Unknown 3.80% 4.04% #3 2
Prev: #5
5.0
—
8,842,000 34.7%
P
S
34,325,000 $36,151,777 — 13F Filing 2026-03-31 2026-05-11
N/A
PCG US
—
Unknown 3.73% 4.21% #4 1
Prev: #3
4.5
—
6,684,000 24.4%
P
S
34,085,000 $35,547,420 — 13F Filing 2026-03-31 2026-05-11
N/A
HAE US
—
Unknown 3.65% 4.46% #5 4
Prev: #1
4.5
—
9,373,000 32.5%
P
S
38,253,000 $34,807,620 — 13F Filing 2026-03-31 2026-05-11
N/A
ITRI US
—
Unknown 3.61% 3.45% #6 4
Prev: #10
4.4
—
13,276,000 58.4%
P
S
35,995,000 $34,376,084 — 13F Filing 2026-03-31 2026-05-11
N/A
AKAM US
—
Unknown 3.56% 2.40% #7 12
Prev: #19
4.4
—
12,898,000 80.1%
P
S
29,005,000 $33,877,408 — 13F Filing 2026-03-31 2026-05-11
N/A
BL US
—
Unknown 3.54% 3.07% #8 6
Prev: #14
4.4
—
17,182,000 87.0%
P
S
36,922,000 $33,696,273 — 13F Filing 2026-03-31 2026-05-11
N/A
GBX US
—
Unknown 3.47% 3.65% #9 1
Prev: #8
3.9
—
5,882,000 26.0%
P
S
28,469,000 $33,016,638 — 13F Filing 2026-03-31 2026-05-11
N/A
MTH US
—
Unknown 3.45% 3.60% #10 1
Prev: #9
3.9
—
9,439,000 38.5%
P
S
33,972,000 $32,900,355 — 13F Filing 2026-03-31 2026-05-11
N/A
ON US
—
Unknown 3.36% 3.29% #11
Prev: #11
3.8
—
9,546,000 41.4%
P
S
32,595,000 $32,015,952 — 13F Filing 2026-03-31 2026-05-11
N/A
LIVN US
—
Unknown 3.20% 3.88% #12 6
Prev: #6
3.8
—
4,963,000 21.9%
P
S
27,603,000 $30,500,052 — 13F Filing 2026-03-31 2026-05-11
N/A
GWRE US
—
Unknown 3.18% 0.64% #13 26
Prev: #39
4.3
—
28,234,000 705.9%
P
S
32,234,000 $30,266,505 — 13F Filing 2026-03-31 2026-05-11
N/A
FOUR US
—
Unknown 3.10% 3.23% #14 1
Prev: #13
3.7
—
8,728,000 38.5%
P
S
31,386,000 $29,509,431 — 13F Filing 2026-03-31 2026-05-11
N/A
DDOG US
—
Unknown 3.09% 1.08% #15 17
Prev: #32
4.2
—
22,997,000 314.7%
P
S
30,305,000 $29,397,823 — 13F Filing 2026-03-31 2026-05-11
N/A
PSN US
—
Unknown 2.94% 2.13% #16 7
Prev: #23
4.2
—
15,840,000 114.4%
P
S
29,685,000 $27,974,740 — 13F Filing 2026-03-31 2026-05-11
N/A
MCHP US
—
Unknown 2.91% — #17
Prev: #—
4.7
—
27,869,000 —
NEW
 27,869,000 $27,714,606 — 13F Filing 2026-03-31 2026-05-11
N/A
GPN US
—
Unknown 2.81% 2.88% #18 3
Prev: #15
3.6
—
10,560,000 49.0%
P
S
32,113,000 $26,726,727 — 13F Filing 2026-03-31 2026-05-11
N/A
NVST US
—
Unknown 2.67% — #19
Prev: #—
4.6
—
25,419,000 —
NEW
 25,419,000 $25,406,929 — 13F Filing 2026-03-31 2026-05-11
N/A
WGO US
—
Unknown 2.52% 3.25% #20 8
Prev: #12
3.0
—
3,354,000 14.5%
P
S
26,517,000 $23,994,041 — 13F Filing 2026-03-31 2026-05-11
N/A
AMPH US
—
Unknown 2.48% 2.74% #21 4
Prev: #17
3.5
—
6,076,000 30.5%
P
S
26,026,000 $23,622,632 — 13F Filing 2026-03-31 2026-05-11
N/A
PRGS US
—
Unknown 2.33% 1.68% #22 4
Prev: #26
3.9
—
14,748,000 130.8%
P
S
26,021,000 $22,187,860 — 13F Filing 2026-03-31 2026-05-11
N/A
RGEN US
—
Unknown 2.32% 2.27% #23 2
Prev: #21
3.9
—
10,608,000 76.5%
P
S
24,481,000 $22,112,378 — 13F Filing 2026-03-31 2026-05-11
N/A
LMAT US
—
Unknown 2.23% 0.48% #24 26
Prev: #50
3.9
—
16,585,000 510.3%
P
S
19,835,000 $21,216,686 — 13F Filing 2026-03-31 2026-05-11
N/A
DBX US
—
Unknown 2.09% 0.59% #25 15
Prev: #40
3.8
—
18,397,000 459.9%
P
S
22,397,000 $19,915,259 — 13F Filing 2026-03-31 2026-05-11
N/A
AKAM US
—
Unknown 2.07% 2.50% #26 8
Prev: #18
1.3
—
100,000 0.6%
P
S
17,150,000 $19,755,171 — 13F Filing 2026-03-31 2026-05-11
N/A
LYFT US
—
Unknown 2.07% 2.84% #27 11
Prev: #16
3.3
—
3,724,000 23.7%
P
S
19,420,000 $19,739,169 — 13F Filing 2026-03-31 2026-05-11
N/A
LNTH US
—
Unknown 1.82% 1.16% #28 3
Prev: #31
3.7
—
7,630,000 112.1%
P
S
14,437,000 $17,351,327 — 13F Filing 2026-03-31 2026-05-11
N/A
OMCL US
—
Unknown 1.81% 2.29% #29 9
Prev: #20
3.2
—
4,872,000 34.2%
P
S
19,126,000 $17,253,301 — 13F Filing 2026-03-31 2026-05-11
N/A
CMS US
—
Unknown 1.59% 0.15% #30 24
Prev: #54
3.6
—
12,441,000 1311.0%
P
S
13,390,000 $15,178,770 — 13F Filing 2026-03-31 2026-05-11
N/A
PPL US
—
Unknown 1.14% 1.38% #31 2
Prev: #29
2.5
—
796,000 9.4%
P
S
9,249,000 $10,883,761 — 13F Filing 2026-03-31 2026-05-11
N/A
LCII US
—
Unknown 1.04% — #32
Prev: #—
3.9
—
8,200,000 —
NEW
 8,200,000 $9,925,116 — 13F Filing 2026-03-31 2026-05-11
N/A
SPB US
—
Unknown 0.96% 1.27% #33 3
Prev: #30
0.9
—
290,000 3.2%
P
S
9,290,000 $9,185,952 — 13F Filing 2026-03-31 2026-05-11
N/A
AVAV US
—
Unknown 0.82% — #34
Prev: #—
3.8
—
7,916,000 —
NEW
 7,916,000 $7,811,628 — 13F Filing 2026-03-31 2026-05-11
N/A
PCRX US
—
Unknown 0.74% 0.50% #35 14
Prev: #49
3.3
—
3,840,000 113.6%
P
S
7,219,000 $7,017,410 — 13F Filing 2026-03-31 2026-05-11
N/A
ARRY US
—
Unknown 0.70% — #36
Prev: #—
3.8
—
7,369,000 —
NEW
 7,369,000 $6,691,715 — 13F Filing 2026-03-31 2026-05-11
N/A
WKC US
—
Unknown 0.63% 0.68% #37
Prev: #37
3.3
—
2,902,000 67.9%
P
S
7,174,000 $5,983,630 — 13F Filing 2026-03-31 2026-05-11
N/A
JAZZ US
—
Unknown 0.60% — #38
Prev: #—
3.7
—
5,500,000 —
NEW
 5,500,000 $5,677,640 — 13F Filing 2026-03-31 2026-05-11
N/A
ALRM US
—
Unknown 0.55% 2.13% #39 15
Prev: #24
0.2
—
-9,321,000 -62.3%
P
S
5,649,000 $5,227,076 — 13F Filing 2026-03-31 2026-05-11
N/A
SO US
—
Unknown 0.47% — #40
Prev: #—
3.7
—
4,500,000 —
NEW
 4,500,000 $4,460,120 — 13F Filing 2026-03-31 2026-05-11
N/A
LYV US
—
Unknown 0.47% — #41
Prev: #—
3.7
—
4,600,000 —
NEW
 4,600,000 $4,449,361 — 13F Filing 2026-03-31 2026-05-11
N/A
CNP US
—
Unknown 0.46% 0.23% #42 10
Prev: #52
3.2
—
2,285,000 165.9%
P
S
3,662,000 $4,345,824 — 13F Filing 2026-03-31 2026-05-11
N/A
CAKE US
—
Unknown 0.43% — #43
Prev: #—
3.7
—
6,000,000 —
NEW
 6,000,000 $4,096,620 — 13F Filing 2026-03-31 2026-05-11
N/A
BMRN US
—
Unknown 0.41% 0.57% #44 3
Prev: #41
0.7
—
15,000 0.4%
P
S
4,015,000 $3,875,178 — 13F Filing 2026-03-31 2026-05-11
N/A
FLR US
—
Unknown 0.35% 0.55% #45 2
Prev: #43
2.6
—
1,045,000 33.2%
P
S
4,195,000 $3,364,182 — 13F Filing 2026-03-31 2026-05-11
N/A
COGT US
—
Unknown 0.34% 0.69% #46 10
Prev: #36
2.1
—
625,000 15.6%
P
S
4,625,000 $3,279,922 — 13F Filing 2026-03-31 2026-05-11
N/A
TTEK US
—
Unknown 0.32% 0.73% #47 12
Prev: #35
2.1
—
384,000 8.5%
P
S
4,884,000 $3,056,189 — 13F Filing 2026-03-31 2026-05-11
N/A
POST US
—
Unknown 0.28% 0.64% #48 10
Prev: #38
1.1
—
no change no change
P
S
4,000,000 $2,693,713 — 13F Filing 2026-03-31 2026-05-11
N/A
NTNX US
—
Unknown 0.26% — #49
Prev: #—
3.6
—
4,000,000 —
NEW
 4,000,000 $2,496,725 — 13F Filing 2026-03-31 2026-05-11
N/A
COLL US
—
Unknown 0.26% 0.84% #50 16
Prev: #34
0.6
—
125,000 3.1%
P
S
4,125,000 $2,474,743 — 13F Filing 2026-03-31 2026-05-11
Showing 1-50 of 66 holdings

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