Full & Historical Holdings
Mid Cap Growth Series
View Historical Holdings by Month
| Based on Market Value | Based on Equivalent Exposure | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| CUSIP/SEDOL | Ticker |
Securities
(on 10-31-25)
|
Shares or Par Amount | Value | Percent of Net Assets | Value | Percent of Net Assets | Market Cap ($mm) |
GICS Sectors
The Global Industry Classification Standard (GICS®) was developed by and/or is the exclusive property of MSCI, Inc. and S&P Global Market Intelligence Inc. ("S&P Global Market Intelligence"). GICS is a service mark of MSCI and S&P Global Market Intelligence and has been licensed for use by MFS. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS. |
Country | |
| 44320110 | HWM US | Howmet Aerospace Inc | 75,671 | $15,584,442.45 | 4.44% | $15,584,442.45 | 4.44% | 82,997.85 | Industrials | United States | |
| 87405410 | TTWO US | Take-Two Interactive Software Inc | 47,138 | $12,084,769.06 | 3.44% | $12,084,769.06 | 3.44% | 47,292.63 | Communication Services | United States | |
| 40171V10 | GWRE US | Guidewire Software Inc | 45,128 | $10,543,705.92 | 3.00% | $10,543,705.92 | 3.00% | 19,749.72 | Information Technology | United States | |
| 92840M10 | VST US | Vistra Corp | 55,063 | $10,368,362.90 | 2.95% | $10,368,362.90 | 2.95% | 63,856.67 | Utilities | United States | |
| L8681T10 | SPOT US | Spotify Technology SA | 14,550 | $9,534,906.00 | 2.72% | $9,534,906.00 | 2.72% | 134,850.44 | Communication Services | Sweden | |
| 77104910 | RBLX US | ROBLOX Corp | 76,224 | $8,668,193.28 | 2.47% | $8,668,193.28 | 2.47% | 78,826.27 | Communication Services | United States | |
| 60983910 | MPWR US | Monolithic Power Systems Inc | 8,246 | $8,287,230.00 | 2.36% | $8,287,230.00 | 2.36% | 48,144.53 | Information Technology | United States | |
| 05464C10 | AXON US | Axon Enterprise Inc | 11,273 | $8,254,428.79 | 2.35% | $8,254,428.79 | 2.35% | 57,483.31 | Industrials | United States | |
| 53803410 | LYV US | Live Nation Entertainment Inc | 50,628 | $7,570,404.84 | 2.16% | $7,570,404.84 | 2.16% | 35,060.75 | Communication Services | United States | |
| 77070010 | HOOD US | Robinhood Markets Inc | 51,505 | $7,559,903.90 | 2.15% | $7,559,903.90 | 2.15% | 130,372.49 | Financials | United States | |
| 50212V10 | LPLA US | LPL Financial Holdings Inc | 18,861 | $7,116,443.91 | 2.03% | $7,116,443.91 | 2.03% | 30,198.76 | Financials | United States | |
| 12504L10 | CBRE US | CBRE Group Inc | 45,374 | $6,916,358.82 | 1.97% | $6,916,358.82 | 1.97% | 45,362.10 | Real Estate | United States | |
| 74762E10 | PWR US | Quanta Services Inc | 15,108 | $6,785,456.04 | 1.93% | $6,785,456.04 | 1.93% | 66,972.42 | Industrials | United States | |
| 63230710 | NTRA US | Natera Inc | 33,134 | $6,591,346.62 | 1.88% | $6,591,346.62 | 1.88% | 27,302.77 | Health Care | United States | |
| 23804L10 | DDOG US | Datadog Inc | 40,055 | $6,521,354.55 | 1.86% | $6,521,354.55 | 1.86% | 56,757.03 | Information Technology | United States | |
| 87256C10 | TKO US | TKO Group Holdings Inc | 33,830 | $6,373,572.00 | 1.82% | $6,373,572.00 | 1.82% | 15,474.59 | Communication Services | United States | |
| 18915M10 | NET US | Cloudflare Inc | 23,915 | $6,057,669.50 | 1.73% | $6,057,669.50 | 1.73% | 88,706.17 | Information Technology | United States | |
| 04351P10 | ASND US | Ascendis Pharma AS ADR | 29,889 | $6,025,622.40 | 1.72% | $6,025,622.40 | 1.72% | 12,328.13 | Health Care | Denmark | |
| 22266T10 | CPNG US | Coupang Inc | 185,527 | $5,931,298.19 | 1.69% | $5,931,298.19 | 1.69% | 58,153.43 | Consumer Discretionary | South Korea | |
| 16411R20 | LNG US | Cheniere Energy Inc | 27,325 | $5,792,900.00 | 1.65% | $5,792,900.00 | 1.65% | 46,046.40 | Energy | United States | |
| 57479510 | MASI US | Masimo Corp | 39,658 | $5,577,897.70 | 1.59% | $5,577,897.70 | 1.59% | 7,640.81 | Health Care | United States | |
| 30063P10 | EXAS US | Exact Sciences Corp | 81,687 | $5,284,332.03 | 1.51% | $5,284,332.03 | 1.51% | 12,247.05 | Health Care | United States | |
| 12738710 | CDNS US | Cadence Design Systems Inc | 15,559 | $5,269,677.71 | 1.50% | $5,269,677.71 | 1.50% | 92,191.76 | Information Technology | United States | |
| 63110310 | NDAQ US | Nasdaq Inc | 58,361 | $4,989,281.89 | 1.42% | $4,989,281.89 | 1.42% | 48,964.06 | Financials | United States | |
| 92916010 | VMC US | Vulcan Materials Co | 16,593 | $4,803,673.50 | 1.37% | $4,803,673.50 | 1.37% | 38,251.90 | Materials | United States | |
| 89623910 | TRMB US | Trimble Inc | 60,093 | $4,792,416.75 | 1.37% | $4,792,416.75 | 1.37% | 18,980.50 | Information Technology | United States | |
| 67103H10 | ORLY US | O'Reilly Automotive Inc | 50,743 | $4,792,168.92 | 1.37% | $4,792,168.92 | 1.37% | 79,974.85 | Consumer Discretionary | United States | |
| B15C4L | CSU CN | Constellation Software Inc/Canada | 1,819 | $4,787,048.25 | 1.36% | $4,787,048.25 | 1.36% | 55,770.82 | Information Technology | Canada | |
| 97415510 | WING US | Wingstop Inc | 20,874 | $4,521,934.62 | 1.29% | $4,521,934.62 | 1.29% | 6,049.18 | Consumer Discretionary | United States | |
| 00846U10 | A US | Agilent Technologies Inc | 30,590 | $4,477,152.40 | 1.28% | $4,477,152.40 | 1.28% | 41,506.82 | Health Care | United States | |
| 12201710 | BURL US | Burlington Stores Inc | 16,303 | $4,460,337.77 | 1.27% | $4,460,337.77 | 1.27% | 17,245.75 | Consumer Discretionary | United States | |
| 14316J10 | CG US | Carlyle Group Inc | 83,181 | $4,435,210.92 | 1.26% | $4,435,210.92 | 1.26% | 19,286.11 | Financials | United States | |
| 13321L10 | CCJ US | Cameco Corp | 39,880 | $4,076,134.80 | 1.16% | $4,076,134.80 | 1.16% | 44,500.95 | Energy | Canada | |
| 05605H10 | BWXT US | BWX Technologies Inc | 18,222 | $3,892,401.42 | 1.11% | $3,892,401.42 | 1.11% | 19,523.74 | Industrials | United States | |
| 03990B10 | ARES US | Ares Management Corp | 25,775 | $3,833,000.25 | 1.09% | $3,833,000.25 | 1.09% | 32,622.66 | Financials | United States | |
| G93A5A10 | VIK US | Viking Holdings Ltd | 62,578 | $3,807,871.30 | 1.09% | $3,807,871.30 | 1.09% | 26,965.25 | Consumer Discretionary | United States | |
| 22160N10 | CSGP US | CoStar Group Inc | 54,462 | $3,747,530.22 | 1.07% | $3,747,530.22 | 1.07% | 29,163.25 | Real Estate | United States | |
| 92247510 | VEEV US | Veeva Systems Inc | 12,548 | $3,653,977.60 | 1.04% | $3,653,977.60 | 1.04% | 47,730.02 | Health Care | United States | |
| 26142V10 | DKNG US | DraftKings Inc | 116,984 | $3,578,540.56 | 1.02% | $3,578,540.56 | 1.02% | 15,187.02 | Consumer Discretionary | United States | |
| 67929510 | OKTA US | Okta Inc | 38,962 | $3,566,191.86 | 1.02% | $3,566,191.86 | 1.02% | 16,133.44 | Information Technology | United States | |
| 02043Q10 | ALNY US | Alnylam Pharmaceuticals Inc | 7,773 | $3,544,798.92 | 1.01% | $3,544,798.92 | 1.01% | 60,249.19 | Health Care | United States | |
| 89400J10 | TRU US | TransUnion | 42,558 | $3,454,858.44 | 0.98% | $3,454,858.44 | 0.98% | 15,765.16 | Industrials | United States | |
| 23156110 | CW US | Curtiss-Wright Corp | 5,771 | $3,437,957.83 | 0.98% | $3,437,957.83 | 0.98% | 22,445.98 | Industrials | United States | |
| 44857910 | H US | Hyatt Hotels Corp | 23,648 | $3,249,471.68 | 0.93% | $3,249,471.68 | 0.93% | 13,118.40 | Consumer Discretionary | United States | |
| 14686910 | CVNA US | Carvana Co | 10,537 | $3,230,011.98 | 0.92% | $3,230,011.98 | 0.92% | 43,351.86 | Consumer Discretionary | United States | |
| 16516773 | EXE US | Expand Energy Corp | 30,162 | $3,116,036.22 | 0.89% | $3,116,036.22 | 0.89% | 24,605.31 | Energy | United States | |
| G8473T10 | STE US | STERIS PLC | 12,659 | $2,983,726.30 | 0.85% | $2,983,726.30 | 0.85% | 23,216.45 | Health Care | United States | |
| 87603010 | TPR US | Tapestry Inc | 26,108 | $2,867,180.56 | 0.82% | $2,867,180.56 | 0.82% | 22,853.54 | Consumer Discretionary | United States | |
| V7780T10 | RCL US | Royal Caribbean Cruises Ltd | 9,739 | $2,793,437.37 | 0.80% | $2,793,437.37 | 0.80% | 78,222.26 | Consumer Discretionary | United States | |
| 36168Q10 | GFL US | GFL Environmental Inc | 62,854 | $2,746,091.26 | 0.78% | $2,746,091.26 | 0.78% | 16,526.27 | Industrials | Canada | |
| 94184810 | WAT US | Waters Corp | 7,470 | $2,611,512.00 | 0.74% | $2,611,512.00 | 0.74% | 20,809.64 | Health Care | United States | |
| 71377A10 | PFGC US | Performance Food Group Co | 25,310 | $2,448,489.40 | 0.70% | $2,448,489.40 | 0.70% | 15,169.90 | Consumer Staples | United States | |
| 56275010 | MANH US | Manhattan Associates Inc | 13,152 | $2,394,584.64 | 0.68% | $2,394,584.64 | 0.68% | 10,971.22 | Information Technology | United States | |
| 90225210 | TYL US | Tyler Technologies Inc | 4,966 | $2,365,107.16 | 0.67% | $2,365,107.16 | 0.67% | 20,492.39 | Information Technology | United States | |
| 92537N10 | VRT US | Vertiv Holdings Co | 12,243 | $2,361,184.98 | 0.67% | $2,361,184.98 | 0.67% | 73,737.77 | Industrials | United States | |
| 75991610 | RGEN US | Repligen Corp | 14,958 | $2,229,639.48 | 0.64% | $2,229,639.48 | 0.64% | 8,385.76 | Health Care | United States | |
| 03852U10 | ARMK US | Aramark | 58,306 | $2,208,631.28 | 0.63% | $2,208,631.28 | 0.63% | 9,956.79 | Consumer Discretionary | United States | |
| H8088L10 | SRAD US | Sportradar Group AG | 85,464 | $2,188,733.04 | 0.62% | $2,188,733.04 | 0.62% | 7,669.17 | Consumer Discretionary | Switzerland | |
| 09073M10 | TECH US | Techne Corp | 31,180 | $1,950,932.60 | 0.56% | $1,950,932.60 | 0.56% | 9,741.74 | Health Care | United States | |
| 70557310 | PEGA US | Pegasystems Inc | 30,195 | $1,921,911.75 | 0.55% | $1,921,911.75 | 0.55% | 10,855.19 | Information Technology | United States | |
| 42829110 | HXL US | Hexcel Corp | 26,439 | $1,887,744.60 | 0.54% | $1,887,744.60 | 0.54% | 5,683.86 | Industrials | United States | |
| 14365830 | CCL US | Carnival Corp | 65,241 | $1,880,898.03 | 0.54% | $1,880,898.03 | 0.54% | 37,824.96 | Consumer Discretionary | United States | |
| 05550J10 | BJ US | BJ's Wholesale Club Holdings Inc | 20,636 | $1,821,333.36 | 0.52% | $1,821,333.36 | 0.52% | 11,628.55 | Consumer Staples | United States | |
| 04626A10 | ALAB US | Astera Labs Inc | 9,259 | $1,728,470.12 | 0.49% | $1,728,470.12 | 0.49% | 31,029.79 | Information Technology | United States | |
| 91332U10 | U US | Unity Software Inc | 45,497 | $1,724,336.30 | 0.49% | $1,724,336.30 | 0.49% | 16,013.43 | Information Technology | United States | |
| 60471A10 | MIR US | Mirion Technologies Inc | 51,762 | $1,520,249.94 | 0.43% | $1,520,249.94 | 0.43% | 7,278.52 | Information Technology | United States | |
| 25213110 | DXCM US | Dexcom Inc | 24,598 | $1,432,095.56 | 0.41% | $1,432,095.56 | 0.41% | 22,706.75 | Health Care | United States | |
| 09057220 | BIO US | Bio-Rad Laboratories Inc | 4,399 | $1,405,700.45 | 0.40% | $1,405,700.45 | 0.40% | 8,619.54 | Health Care | United States | |
| BNGDN8 | MRO LN | Melrose Industries PLC | 166,757 | $1,370,493.60 | 0.39% | $1,370,493.61 | 0.39% | 10,364.22 | Industrials | United Kingdom | |
| G7997R10 | STX US | Seagate Technology Holdings PLC | 5,281 | $1,351,302.28 | 0.39% | $1,351,302.28 | 0.39% | 54,758.32 | Information Technology | United States | |
| 92345Y10 | VRSK US | Verisk Analytics Inc | 5,927 | $1,296,590.52 | 0.37% | $1,296,590.52 | 0.37% | 30,489.14 | Industrials | United States | |
| 15986410 | CRL US | Charles River Laboratories International Inc | 6,756 | $1,216,552.92 | 0.35% | $1,216,552.92 | 0.35% | 8,862.00 | Health Care | United States | |
| 53122975 | FWONK US | Liberty Media Corp-Liberty Formula One | 11,999 | $1,198,100.15 | 0.34% | $1,198,100.15 | 0.34% | 24,966.99 | Communication Services | United States | |
| 44351060 | HUBB US | Hubbell Inc | 2,495 | $1,172,650.00 | 0.33% | $1,172,650.00 | 0.33% | 24,978.15 | Industrials | United States | |
| M7518J10 | ODD US | Oddity Tech Ltd | 25,068 | $1,134,327.00 | 0.32% | $1,134,327.00 | 0.32% | 2,526.22 | Consumer Staples | Israel | |
| 46631310 | JBL US | Jabil Inc | 5,122 | $1,131,398.58 | 0.32% | $1,131,398.58 | 0.32% | 23,741.48 | Information Technology | United States | |
| 19247G10 | COHR US | Coherent Corp | 8,537 | $1,126,542.52 | 0.32% | $1,126,542.52 | 0.32% | 20,560.09 | Information Technology | United States | |
| 15118V20 | CELH US | Celsius Holdings Inc | 16,576 | $998,372.48 | 0.28% | $998,372.48 | 0.28% | 15,537.52 | Consumer Staples | United States | |
| 36873610 | GNRC US | Generac Holdings Inc | 5,911 | $993,166.22 | 0.28% | $993,166.22 | 0.28% | 9,860.25 | Industrials | United States | |
| 17177930 | CIEN US | Ciena Corp | 5,178 | $983,405.76 | 0.28% | $983,405.76 | 0.28% | 26,843.86 | Information Technology | United States | |
| G1691012 | BLSH US | Bullish | 18,460 | $933,522.20 | 0.27% | $933,522.20 | 0.27% | 7,620.08 | Financials | Cayman Islands | |
| 85223410 | XYZ US | Block Inc | 12,259 | $930,948.46 | 0.27% | $930,948.46 | 0.27% | 46,338.82 | Financials | United States | |
| M9806810 | WIX US | Wix.com Ltd | 6,093 | $886,775.22 | 0.25% | $886,775.22 | 0.25% | 8,165.96 | Information Technology | Israel | |
| 61770010 | MORN US | Morningstar Inc | 4,094 | $869,156.20 | 0.25% | $869,156.20 | 0.25% | 8,954.18 | Financials | United States | |
| 89235610 | TSCO US | Tractor Supply Co | 15,794 | $854,613.34 | 0.24% | $854,613.34 | 0.24% | 28,677.76 | Consumer Discretionary | United States | |
| 516529 | ASM NA | ASM International NV | 1,310 | $848,603.98 | 0.24% | $848,603.98 | 0.24% | 31,954.51 | Information Technology | Netherlands | |
| 33975010 | FND US | Floor & Decor Holdings Inc | 12,479 | $779,687.92 | 0.22% | $779,687.92 | 0.22% | 6,732.60 | Consumer Discretionary | United States | |
| 87265710 | TPG US | TPG Inc | 12,346 | $679,523.84 | 0.19% | $679,523.84 | 0.19% | 7,958.62 | Financials | United States | |
| 03674X10 | AR US | Antero Resources Corp | 21,742 | $672,045.22 | 0.19% | $672,045.22 | 0.19% | 9,535.55 | Energy | United States | |
| 00091G10 | ACVA US | ACV Auctions Inc | 73,166 | $663,615.62 | 0.19% | $663,615.62 | 0.19% | 1,561.01 | Industrials | United States | |
| 25667710 | DG US | Dollar General Corp | 6,305 | $622,051.30 | 0.18% | $622,051.30 | 0.18% | 21,715.76 | Consumer Staples | United States | |
| 03110010 | AME US | AMETEK Inc | 2,995 | $605,319.45 | 0.17% | $605,319.45 | 0.17% | 46,678.11 | Industrials | United States | |
| 81764X10 | TTAN US | ServiceTitan Inc | 6,381 | $602,111.16 | 0.17% | $602,111.16 | 0.17% | 8,759.53 | Information Technology | United States | |
| G0260P10 | AS US | Amer Sports Inc | 18,964 | $592,245.72 | 0.17% | $592,245.72 | 0.17% | 17,296.59 | Consumer Discretionary | Finland | |
| 69370C10 | PTC US | PTC Inc | 2,899 | $575,567.46 | 0.16% | $575,567.46 | 0.16% | 23,783.64 | Information Technology | United States | |
| 64119N60 | NTSK US | Netskope Inc | 22,312 | $527,455.68 | 0.15% | $527,455.68 | 0.15% | 9,032.21 | Information Technology | United States | |
| 88023B10 | TEM US | Tempus AI Inc | 5,258 | $472,431.30 | 0.13% | $472,431.30 | 0.13% | 15,587.09 | Health Care | United States | |
| 09371210 | BE US | Bloom Energy Corp | 3,154 | $416,832.64 | 0.12% | $416,832.64 | 0.12% | 31,257.26 | Industrials | United States | |
| G4124C10 | GRAB US | Grab Holdings Ltd | 68,455 | $411,414.55 | 0.12% | $411,414.55 | 0.12% | 24,496.76 | Industrials | Singapore | |
| 91820410 | VFC US | VF Corp | 26,927 | $378,055.08 | 0.11% | $378,055.08 | 0.11% | 5,485.78 | Consumer Discretionary | United States | |
| 14215210 | CAI US | Caris Life Sciences Inc | 11,590 | $348,627.20 | 0.10% | $348,627.20 | 0.10% | 8,459.22 | Health Care | United States | |
| 00217D10 | ASTS US | AST SpaceMobile Inc | 4,247 | $340,821.75 | 0.10% | $340,821.75 | 0.10% | 21,998.79 | Communication Services | United States | |
| 14892910 | CAVA US | Cava Group Inc | 5,658 | $304,004.34 | 0.09% | $304,004.34 | 0.09% | 6,230.22 | Consumer Discretionary | United States | |
| 31684110 | FIG US | Figma Inc | 5,896 | $293,856.64 | 0.08% | $293,856.64 | 0.08% | 24,295.06 | Information Technology | United States | |
| CASH_USD | CASH_USD | Cash | - | 3,927,721.64 | 1.11% | 3,910,166.65 | 1.11% | - | - | - | |
| 55291X10 | 55291X10 | MFS Institutional Money Market Short Term Vehicle FRB | - | 3,993,627.77 | 1.14% | 3,994,133.45 | - | - | - | United States | |
| CAPUSD | CAPUSD | CAPUSD | - | 116,791.19 | 0.03% | 116,791.19 | - | - | - | United States | |
| CASH_CAD | CASH_CAD | Canadian Dollar | - | 21.03 | 0.00% | 21.03 | - | - | - | Canada | |
| CASH_USD | CASH_USD | Us Dollars | - | -200,779.02 | -0.06% | -200,779.02 | - | - | - | United States | |
| CASH_DERV | - | Other | - | -0.01 | 0.00% | 17,554.99 | 0.01% | - | - | Other | |
*Short positions, unlike long positions, lose value if the underlying asset gains value.
Portfolio characteristics are based on equivalent exposure, which measures how a portfolio's value would change due to price changes in an asset held either directly or, in the case of a derivative contract, indirectly. The market value of the holding may differ.
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