ETF · holdings as filed 2026-05-31
What's inside MCPRX?
MFS Mid Cap Growth Fund
- Holdings
- 111
- positions in the fund
- Top 10
- 27%
- of fund assets
- Expense ratio
- 1.27%
- net, per year
- Fund size
- $14B
- total net assets
Top 20 holdings
| Rank | Logo | Ticker / Name | Weight | |
|---|---|---|---|---|
| 1 | M  | MPWRMONOLITHIC POWER SYSTEMS INC | 4.22% | |
| 2 | H  | HWMHOWMET AEROSPACE INC | 3.91% | |
| 3 | P  | PWRQUANTA SERVICES INC | 3.30% | |
| 4 | T  | TTWOTAKE-TWO INTERACTIVE SOFTWRE | 2.69% | |
| 5 | L  | LYVLIVE NATION ENTERTAINMENT IN | 2.60% | |
| 6 | N  | NTRANATERA INC | 2.16% | |
| 7 | T  | TKOTKO GROUP HOLDINGS INC | 2.10% | |
| 8 | M  | MASI*MASIMO CORP | 2.10% | |
| 9 | A  | ASNDASCENDIS PHARMA A/S | 2.05% | |
| 10 | B  | BURLBURLINGTON STORES INC | 1.93% | |
| 11 | N  | NETCLOUDFLARE INC - CLASS A | 1.90% | |
| 12 | S  | STXSEAGATE TECHNOLOGY HOLDINGS | 1.88% | |
| 13 | V  | VSTVISTRA CORP | 1.74% | |
| 14 | N  | NDAQNASDAQ INC | 1.73% | |
| 15 | L  | LNGCHENIERE ENERGY INC | 1.65% | |
| 16 | V  | VIKVIKING HOLDINGS LTD | 1.65% | |
| 17 | H  | HHYATT HOTELS CORP - CL A | 1.58% | |
| 18 | C  | CIENCIENA CORP | 1.56% | |
| 19 | A  | AXONAXON ENTERPRISE INC | 1.54% | |
| 20 | L  | LPLALPL FINANCIAL HOLDINGS INC | 1.53% |
Top holdings — Information Technology
Your 10 largest positions in this sector
1
M
MPWRMONOLITHIC POWER SYSTEMS INC
4.22%2
T
TTWOTAKE-TWO INTERACTIVE SOFTWRE
2.69%3
N
NETCLOUDFLARE INC - CLASS A
1.90%4
S
STXSEAGATE TECHNOLOGY HOLDINGS
1.88%5
C
CIENCIENA CORP
1.56%6
C
CWCURTISS-WRIGHT CORP
1.30%7
V
VRTVERTIV HOLDINGS CO-A
1.18%8
J
JBLJABIL INC
1.17%9
O
OKTAOKTA INC
1.13%10
M
MTSIMACOM TECHNOLOGY SOLUTIONS H
1.12%Top holdings — United States
Your 10 largest positions in this country
1
M
MPWRMONOLITHIC POWER SYSTEMS INC
4.22%2
H
HWMHOWMET AEROSPACE INC
3.91%3
P
PWRQUANTA SERVICES INC
3.30%4
T
TTWOTAKE-TWO INTERACTIVE SOFTWRE
2.69%5
L
LYVLIVE NATION ENTERTAINMENT IN
2.60%6
N
NTRANATERA INC
2.16%7
T
TKOTKO GROUP HOLDINGS INC
2.10%8
M
MASI*MASIMO CORP
2.10%9
B
BURLBURLINGTON STORES INC
1.93%10
N
NETCLOUDFLARE INC - CLASS A
1.90%Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-05-31); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.
Informational and educational only — not investment advice.