MSRRX Holdings — MFS Research Fund
Data updated: 2026-08-25
MSRRX holds 99 securities. The top 10 make up 42.0% of net assets, led by NVIDIA (8.38%) and Apple (6.89%). Information Technology (37.0%) and Industrials (14.0%) are the largest sectors, and 90.6% of the portfolio is in United States. No debt holdings are reported.
Holdings cover 100.31% of net asset value (99.93% of total assets; remainder is cash and receivables). As of June 30, 2026 · N-PORT.
MSRRX Portfolio Holdings
99 holdings of MFS Research Fund by percentage of net assets, from the fund's SEC N-PORT filing as of June 30, 2026.
| Holding | Ticker | Sector | % of net assets | Value (USD) |
|---|---|---|---|---|
| NVIDIA Corp. | NVDA | Information Technology | 8.38% | $660.24M |
| Apple, Inc. | AAPL | Information Technology | 6.89% | $543.10M |
| Alphabet, Inc., Class A | GOOGL | Communication Services | 5.02% | $395.24M |
| Microsoft Corp. | MSFT | Information Technology | 4.83% | $380.13M |
| Amazon.com, Inc. | AMZN | Consumer Discretionary | 4.41% | $347.71M |
| Broadcom, Inc. | AVGO | Information Technology | 3.51% | $276.51M |
| JPMorgan Chase & Co. | JPM | Financials | 2.32% | $182.85M |
| KLA Corp. | KLAC | Information Technology | 2.27% | $178.55M |
| Mastercard, Inc., Class A | MA | Financials | 2.27% | $178.42M |
| Meta Platforms, Inc., Class A | META | Communication Services | 2.15% | $169.58M |
| Advanced Micro Devices, Inc. | AMD | Information Technology | 2.05% | $161.13M |
| Bank of America Corp. | BAC | Financials | 1.47% | $116.09M |
| Micron Technology, Inc. | MU | Information Technology | 1.43% | $112.54M |
| Exxon Mobil Corp. | XOM | Energy | 1.32% | $104.28M |
| Johnson & Johnson | JNJ | Health Care | 1.32% | $103.70M |
| Arista Networks, Inc. | ANET | Information Technology | 1.30% | $102.43M |
| Space Exploration Technologies Corp., Class A | SPCX | Industrials | 1.22% | $96.01M |
| Seagate Technology Holdings plc | STX | Information Technology | 1.21% | $95.69M |
| Caterpillar, Inc. | CAT | Industrials | 1.19% | $93.68M |
| Amphenol Corp., Class A | APH | Information Technology | 1.02% | $80.03M |
| RTX Corp. | RTX | Industrials | 1.01% | $79.69M |
| Chubb Ltd. | CB | Financials | 0.91% | $71.69M |
| Spotify Technology SA | SPOT | Communication Services | 0.90% | $70.90M |
| Thermo Fisher Scientific, Inc. | TMO | Health Care | 0.90% | $70.63M |
| CRH plc | CRH | Materials | 0.84% | $66.29M |
| Aon plc, Class A | AON | Financials | 0.84% | $66.19M |
| Morgan Stanley | MS | Financials | 0.84% | $66.02M |
| Texas Instruments, Inc. | TXN | Information Technology | 0.83% | $65.14M |
| Philip Morris International, Inc. | PM | Consumer Staples | 0.82% | $64.43M |
| Charles Schwab Corp. (The) | SCHW | Financials | 0.81% | $63.86M |
| Gilead Sciences, Inc. | GILD | Health Care | 0.80% | $63.11M |
| Waters Corp. | WAT | Health Care | 0.78% | $61.44M |
| GE Vernova, Inc. | GEV | Industrials | 0.77% | $60.45M |
| Uber Technologies, Inc. | UBER | Industrials | 0.76% | $59.98M |
| MFS Institutional Money Market Portfolio, Class A | — | Funds & ETFs | 0.75% | $59.17M |
| Sandisk Corp. | SNDK | Information Technology | 0.75% | $59.05M |
| General Dynamics Corp. | GD | Industrials | 0.75% | $58.95M |
| Pfizer, Inc. | PFE | Health Care | 0.73% | $57.86M |
| Hilton Worldwide Holdings, Inc. | HLT | Consumer Discretionary | 0.73% | $57.50M |
| Cigna Group (The) | CI | Health Care | 0.73% | $57.43M |
| Howmet Aerospace, Inc. | HWM | Industrials | 0.72% | $56.76M |
| TJX Cos., Inc. (The) | TJX | Consumer Discretionary | 0.72% | $56.63M |
| Medtronic plc | MDT | Health Care | 0.70% | $55.37M |
| ConocoPhillips | COP | Energy | 0.70% | $54.85M |
| Trane Technologies plc | TT | Industrials | 0.69% | $54.69M |
| Intel Corp. | INTC | Information Technology | 0.67% | $52.92M |
| Progressive Corp. (The) | PGR | Financials | 0.66% | $52.06M |
| TransUnion | TRU | Industrials | 0.66% | $52.01M |
| PNC Financial Services Group, Inc. (The) | PNC | Financials | 0.66% | $52.00M |
| Ingersoll Rand, Inc. | IR | Industrials | 0.63% | $49.89M |
| Moody's Corp. | MCO | Financials | 0.63% | $49.38M |
| NextEra Energy, Inc. | NEE | Utilities | 0.63% | $49.28M |
| Cadence Design Systems, Inc. | CDNS | Information Technology | 0.63% | $49.26M |
| PepsiCo, Inc. | PEP | Consumer Staples | 0.62% | $48.71M |
| Humana, Inc. | HUM | Health Care | 0.61% | $47.99M |
| CME Group, Inc. | CME | Financials | 0.61% | $47.98M |
| Ferguson Enterprises, Inc. | FERG | Industrials | 0.60% | $47.13M |
| Vertex Pharmaceuticals, Inc. | VRTX | Health Care | 0.60% | $46.98M |
| Shopify, Inc., Class A | SHOP | Information Technology | 0.58% | $45.79M |
| Becton Dickinson & Co. | BDX | Health Care | 0.58% | $45.38M |
| WW Grainger, Inc. | GWW | Industrials | 0.57% | $45.15M |
| Pentair plc | PNR | Industrials | 0.57% | $44.96M |
| Starbucks Corp. | SBUX | Consumer Discretionary | 0.56% | $44.47M |
| Emerson Electric Co. | EMR | Industrials | 0.56% | $44.17M |
| Duke Energy Corp. | DUK | Utilities | 0.54% | $42.50M |
| Viking Holdings Ltd. | VIK | Consumer Discretionary | 0.53% | $41.53M |
| Aramark | ARMK | Consumer Discretionary | 0.53% | $41.40M |
| Comfort Systems USA, Inc. | FIX | Industrials | 0.52% | $41.32M |
| Colgate-Palmolive Co. | CL | Consumer Staples | 0.52% | $40.66M |
| BJ's Wholesale Club Holdings, Inc. | BJ | Consumer Staples | 0.51% | $40.08M |
| Eaton Corp. plc | ETN | Industrials | 0.50% | $39.40M |
| Alliant Energy Corp. | LNT | Utilities | 0.50% | $39.03M |
| Curtiss-Wright Corp. | CW | Industrials | 0.49% | $38.82M |
| Birkenstock Holding plc | BIRK | Consumer Discretionary | 0.47% | $37.05M |
| Coherent Corp. | COHR | Information Technology | 0.45% | $35.40M |
| Simpson Manufacturing Co., Inc. | SSD | Industrials | 0.45% | $35.13M |
| Floor & Decor Holdings, Inc., Class A | FND | Consumer Discretionary | 0.43% | $33.89M |
| Blackstone Digital Infrastructure Trust, Inc. | BXDC | Real Estate | 0.43% | $33.88M |
| Tesla, Inc. | TSLA | Consumer Discretionary | 0.43% | $33.79M |
| T-Mobile US, Inc. | TMUS | Communication Services | 0.42% | $33.35M |
| STERIS plc | STE | Health Care | 0.41% | $31.96M |
| Kenvue, Inc. | KVUE | Consumer Staples | 0.39% | $30.70M |
| XPO, Inc. | XPO | Industrials | 0.37% | $29.48M |
| GFL Environmental, Inc. | GFL | Industrials | 0.37% | $29.28M |
| PG&E Corp. | PCG | Utilities | 0.35% | $27.25M |
| International Flavors & Fragrances, Inc. | IFF | Materials | 0.34% | $26.60M |
| Honeywell International, Inc. | HON | Industrials | 0.33% | $26.08M |
| JPMorgan US Government Money Market Fund Open-End Fund USD | — | Funds & ETFs | 0.33% | $25.88M |
| Boston Scientific Corp. | BSX | Health Care | 0.33% | $25.86M |
| Honeywell Aerospace, Inc. | HONA | Industrials | 0.33% | $25.75M |
| Omnicom Group, Inc. | OMC | Communication Services | 0.32% | $24.82M |
| Valero Energy Corp. | VLO | Energy | 0.30% | $23.83M |
| ON Semiconductor Corp. | ON | Information Technology | 0.30% | $23.42M |
| TKO Group Holdings, Inc. | TKO | Consumer Discretionary | 0.29% | $22.96M |
| Baker Hughes Co. | BKR | Energy | 0.26% | $20.52M |
| Tyson Foods, Inc., Class A | TSN | Consumer Staples | 0.23% | $18.51M |
| EQT Corp. | EQT | Energy | 0.22% | $17.04M |
| TechnipFMC plc | FTI | Energy | 0.17% | $13.19M |
| Constellation Software, Inc. | — | Information Technology | 0.00% | $0 |
MSRRX Sector Allocation
MFS Research Fund holdings grouped by sector, by share of the portfolio's market value.
| Sector | Weight | Holdings |
|---|---|---|
| Information Technology | 37.0% | 18 |
| Industrials | 14.0% | 22 |
| Financials | 12.0% | 11 |
| Consumer Discretionary | 9.1% | 10 |
| Communication Services | 8.8% | 5 |
| Health Care | 8.4% | 12 |
| Consumer Staples | 3.1% | 6 |
| Energy | 3.0% | 6 |
| Utilities | 2.0% | 4 |
| Materials | 1.2% | 2 |
| Funds & ETFs | 1.1% | 2 |
| Real Estate | 0.4% | 1 |
MSRRX Country Allocation
Where MFS Research Fund's holdings are domiciled, by percentage of net assets (largest 8).
| Country | % of net assets |
|---|---|
| United States | 90.6% |
| Ireland | 5.8% |
| Canada | 0.9% |
| Switzerland | 0.9% |
| Luxembourg | 0.9% |
| Bermuda | 0.5% |
| Jersey | 0.5% |
| United Kingdom | 0.2% |
MSRRX Portfolio Allocation
Asset-class allocation of MFS Research Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.2% |
| Cash & Equivalents | 1.1% |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.