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 05-31-26)
|
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 | |
| 60983910 | MPWR US | Monolithic Power Systems Inc | 9,573 | $14,993,328.33 | 4.28% | $14,993,328.33 | 4.28% | 76,947.90 | Information Technology | United States | |
| 44320110 | HWM US | Howmet Aerospace Inc | 53,642 | $13,853,046.50 | 3.95% | $13,853,046.50 | 3.95% | 103,558.25 | Industrials | United States | |
| 74762E10 | PWR US | Quanta Services Inc | 16,594 | $11,810,447.62 | 3.37% | $11,810,447.62 | 3.37% | 106,802.31 | Industrials | United States | |
| 87405410 | TTWO US | Take-Two Interactive Software Inc | 42,234 | $9,467,173.44 | 2.70% | $9,467,173.44 | 2.70% | 41,619.04 | Communication Services | United States | |
| 53803410 | LYV US | Live Nation Entertainment Inc | 54,369 | $9,156,283.29 | 2.61% | $9,156,283.29 | 2.61% | 39,668.47 | Communication Services | United States | |
| 63230710 | NTRA US | Natera Inc | 34,359 | $7,674,769.83 | 2.19% | $7,674,769.83 | 2.19% | 31,990.02 | Health Care | United States | |
| 57479510 | MASI US | Masimo Corp | 42,587 | $7,599,650.15 | 2.17% | $7,599,650.15 | 2.17% | 9,344.71 | Health Care | United States | |
| 87256C10 | TKO US | TKO Group Holdings Inc | 36,332 | $7,454,599.76 | 2.13% | $7,454,599.76 | 2.13% | 15,381.87 | Communication Services | United States | |
| K0858810 | ASND US | Ascendis Pharma AS | 32,099 | $7,193,706.89 | 2.05% | $7,193,706.89 | 2.05% | 13,979.27 | Health Care | Denmark | |
| 12201710 | BURL US | Burlington Stores Inc | 21,041 | $6,813,707.03 | 1.94% | $6,813,707.03 | 1.94% | 20,382.57 | Consumer Discretionary | United States | |
| 18915M10 | NET US | Cloudflare Inc | 27,678 | $6,693,093.96 | 1.91% | $6,693,093.96 | 1.91% | 85,452.90 | Information Technology | United States | |
| G7997R10 | STX US | Seagate Technology Holdings PLC | 7,564 | $6,654,807.20 | 1.90% | $6,654,807.20 | 1.90% | 197,434.16 | Information Technology | United States | |
| 92840M10 | VST US | Vistra Corp | 38,906 | $6,233,908.38 | 1.78% | $6,233,908.38 | 1.78% | 54,170.56 | Utilities | United States | |
| 63110310 | NDAQ US | Nasdaq Inc | 66,724 | $6,173,304.48 | 1.76% | $6,173,304.48 | 1.76% | 52,323.83 | Financials | United States | |
| 16411R20 | LNG US | Cheniere Energy Inc | 25,880 | $5,819,376.80 | 1.66% | $5,819,376.80 | 1.66% | 47,243.09 | Energy | United States | |
| G93A5A10 | VIK US | Viking Holdings Ltd | 62,978 | $5,800,903.58 | 1.65% | $5,800,903.58 | 1.65% | 41,051.40 | Consumer Discretionary | United States | |
| 44857910 | H US | Hyatt Hotels Corp | 30,734 | $5,578,528.34 | 1.59% | $5,573,918.24 | 1.59% | 17,073.41 | Consumer Discretionary | United States | |
| 17177930 | CIEN US | Ciena Corp | 9,521 | $5,524,369.83 | 1.58% | $5,524,369.83 | 1.58% | 82,075.27 | Information Technology | United States | |
| 05464C10 | AXON US | Axon Enterprise Inc | 12,106 | $5,432,204.32 | 1.55% | $5,432,204.32 | 1.55% | 36,167.76 | Industrials | United States | |
| 50212V10 | LPLA US | LPL Financial Holdings Inc | 19,771 | $5,419,180.67 | 1.54% | $5,412,706.67 | 1.54% | 21,953.34 | Financials | United States | |
| 29084Q10 | EME US | EMCOR Group Inc | 6,169 | $5,100,652.58 | 1.45% | $5,100,652.58 | 1.45% | 36,744.11 | Industrials | United States | |
| 19247G10 | COHR US | Coherent Corp | 13,557 | $4,900,448.79 | 1.40% | $4,900,448.79 | 1.40% | 70,717.75 | Information Technology | United States | |
| 13321L10 | CCJ US | Cameco Corp | 42,827 | $4,826,602.90 | 1.38% | $4,826,602.90 | 1.38% | 49,084.57 | Energy | Canada | |
| 23156110 | CW US | Curtiss-Wright Corp | 6,196 | $4,632,191.56 | 1.32% | $4,632,191.56 | 1.32% | 27,622.69 | Industrials | United States | |
| 14686910 | CVNA US | Carvana Co | 61,918 | $4,520,014.00 | 1.29% | $4,520,014.00 | 1.29% | 52,289.05 | Consumer Discretionary | United States | |
| 92916010 | VMC US | Vulcan Materials Co | 15,836 | $4,489,587.52 | 1.28% | $4,480,321.12 | 1.28% | 36,864.48 | Materials | United States | |
| 14316J10 | CG US | Carlyle Group Inc | 92,562 | $4,205,091.66 | 1.20% | $4,205,091.66 | 1.20% | 16,353.64 | Financials | United States | |
| 516529 | ASM NA | ASM International NV | 3,978 | $4,168,521.38 | 1.19% | $4,168,521.38 | 1.19% | 51,691.08 | Information Technology | Netherlands | |
| 92537N10 | VRT US | Vertiv Holdings Co | 13,147 | $4,150,639.37 | 1.18% | $4,150,639.37 | 1.18% | 121,267.00 | Industrials | United States | |
| 46631310 | JBL US | Jabil Inc | 11,368 | $4,145,227.52 | 1.18% | $4,144,318.08 | 1.18% | 38,577.01 | Information Technology | United States | |
| 67929510 | OKTA US | Okta Inc | 32,219 | $3,971,636.13 | 1.13% | $3,971,636.13 | 1.13% | 21,862.80 | Information Technology | United States | |
| 55405Y10 | MTSI US | MACOM Technology Solutions Holdings Inc | 10,874 | $3,965,095.36 | 1.13% | $3,965,095.36 | 1.13% | 27,820.49 | Information Technology | United States | |
| 97415510 | WING US | Wingstop Inc | 23,286 | $3,661,956.36 | 1.04% | $3,654,970.56 | 1.04% | 4,274.42 | Consumer Discretionary | United States | |
| 45232710 | ILMN US | Illumina Inc | 22,213 | $3,619,830.48 | 1.03% | $3,619,830.48 | 1.03% | 24,769.92 | Health Care | United States | |
| 94184810 | WAT US | Waters Corp | 9,390 | $3,601,722.30 | 1.03% | $3,601,722.30 | 1.03% | 37,661.15 | Health Care | United States | |
| 23804L10 | DDOG US | Datadog Inc | 13,957 | $3,452,263.95 | 0.98% | $3,452,263.95 | 0.98% | 88,018.51 | Information Technology | United States | |
| 05605H10 | BWXT US | BWX Technologies Inc | 17,546 | $3,441,647.90 | 0.98% | $3,436,910.48 | 0.98% | 17,945.55 | Industrials | United States | |
| 42829110 | HXL US | Hexcel Corp | 37,748 | $3,389,392.92 | 0.97% | $3,389,392.92 | 0.97% | 6,772.61 | Industrials | United States | |
| 87603010 | TPR US | Tapestry Inc | 23,134 | $3,365,071.64 | 0.96% | $3,365,071.64 | 0.96% | 29,426.56 | Consumer Discretionary | United States | |
| 03852U10 | ARMK US | Aramark | 62,614 | $3,349,849.00 | 0.95% | $3,342,335.32 | 0.95% | 14,036.46 | Consumer Discretionary | United States | |
| 00846U10 | A US | Agilent Technologies Inc | 23,475 | $3,181,566.75 | 0.91% | $3,181,566.75 | 0.91% | 38,301.09 | Health Care | United States | |
| 67103H10 | ORLY US | O'Reilly Automotive Inc | 35,898 | $3,118,818.24 | 0.89% | $3,118,818.24 | 0.89% | 72,309.62 | Consumer Discretionary | United States | |
| 26142V10 | DKNG US | DraftKings Inc | 125,628 | $3,076,629.72 | 0.88% | $3,076,629.72 | 0.88% | 12,150.19 | Consumer Discretionary | United States | |
| 09073M10 | TECH US | Techne Corp | 59,181 | $3,058,474.08 | 0.87% | $3,058,474.08 | 0.87% | 8,091.47 | Health Care | United States | |
| 60782810 | MOD US | Modine Manufacturing Co | 10,665 | $2,974,575.15 | 0.85% | $2,974,575.15 | 0.85% | 14,730.85 | Industrials | United States | |
| 44351060 | HUBB US | Hubbell Inc | 6,177 | $2,934,260.31 | 0.83% | $2,925,488.97 | 0.83% | 25,026.50 | Industrials | United States | |
| 77104910 | RBLX US | ROBLOX Corp | 61,564 | $2,902,742.60 | 0.83% | $2,902,742.60 | 0.83% | 33,749.73 | Communication Services | United States | |
| 69047Q10 | OVV US | Ovintiv Inc | 51,506 | $2,886,396.24 | 0.82% | $2,886,396.24 | 0.82% | 15,842.51 | Energy | United States | |
| 75524B10 | RBC US | RBC Bearings Inc | 4,971 | $2,843,213.16 | 0.81% | $2,843,213.16 | 0.81% | 18,094.16 | Industrials | United States | |
| 75991610 | RGEN US | Repligen Corp | 21,874 | $2,711,282.30 | 0.77% | $2,711,282.30 | 0.77% | 6,991.74 | Health Care | United States | |
| 71377A10 | PFGC US | Performance Food Group Co | 27,181 | $2,668,902.39 | 0.76% | $2,668,902.39 | 0.76% | 15,424.65 | Consumer Staples | United States | |
| 12738710 | CDNS US | Cadence Design Systems Inc | 7,074 | $2,652,254.82 | 0.76% | $2,652,254.82 | 0.76% | 103,411.69 | Information Technology | United States | |
| 76155X10 | RVMD US | Revolution Medicines Inc | 16,641 | $2,620,624.68 | 0.75% | $2,620,624.68 | 0.75% | 33,479.69 | Health Care | United States | |
| 03110010 | AME US | AMETEK Inc | 11,463 | $2,588,918.55 | 0.74% | $2,588,918.55 | 0.74% | 51,765.50 | Industrials | United States | |
| 23345M10 | DTM US | DT Midstream Inc | 18,092 | $2,532,518.16 | 0.72% | $2,532,518.16 | 0.72% | 14,279.94 | Energy | United States | |
| 03674X10 | AR US | Antero Resources Corp | 69,433 | $2,482,229.75 | 0.71% | $2,482,229.75 | 0.71% | 11,076.64 | Energy | United States | |
| 03820C10 | AIT US | Applied Industrial Technologies Inc | 7,821 | $2,376,098.01 | 0.68% | $2,376,098.01 | 0.68% | 11,257.68 | Industrials | United States | |
| V7780T10 | RCL US | Royal Caribbean Cruises Ltd | 7,914 | $2,252,561.82 | 0.64% | $2,252,561.82 | 0.64% | 76,336.34 | Consumer Discretionary | United States | |
| 58507V10 | MDLN US | Medline Inc | 61,320 | $2,241,859.20 | 0.64% | $2,241,859.20 | 0.64% | 30,929.76 | Health Care | United States | |
| 09057220 | BIO US | Bio-Rad Laboratories Inc | 7,030 | $2,196,734.40 | 0.63% | $2,196,734.40 | 0.63% | 8,383.21 | Health Care | United States | |
| 02043Q10 | ALNY US | Alnylam Pharmaceuticals Inc | 7,220 | $2,180,295.60 | 0.62% | $2,180,295.60 | 0.62% | 40,318.13 | Health Care | United States | |
| 09371210 | BE US | Bloom Energy Corp | 7,552 | $2,152,320.00 | 0.61% | $2,152,320.00 | 0.61% | 81,066.51 | Industrials | United States | |
| 40171V10 | GWRE US | Guidewire Software Inc | 14,046 | $2,144,402.82 | 0.61% | $2,144,402.82 | 0.61% | 12,924.66 | Information Technology | United States | |
| G8473T10 | STE US | STERIS PLC | 9,987 | $2,124,534.51 | 0.61% | $2,124,534.51 | 0.61% | 20,868.81 | Health Care | United States | |
| 25213110 | DXCM US | Dexcom Inc | 27,710 | $2,043,335.40 | 0.58% | $2,043,335.40 | 0.58% | 28,456.27 | Health Care | United States | |
| 004561 | ANTO LN | Antofagasta PLC | 36,643 | $2,022,245.31 | 0.58% | $2,022,245.31 | 0.58% | 54,407.23 | Materials | United Kingdom | |
| 60937P10 | MDB US | MongoDB Inc | 5,840 | $1,959,612.00 | 0.56% | $1,959,612.00 | 0.56% | 27,013.12 | Information Technology | United States | |
| 36873610 | GNRC US | Generac Holdings Inc | 6,349 | $1,764,450.59 | 0.50% | $1,764,450.59 | 0.50% | 16,360.20 | Industrials | United States | |
| 89623910 | TRMB US | Trimble Inc | 30,222 | $1,704,823.02 | 0.49% | $1,704,823.02 | 0.49% | 13,149.82 | Information Technology | United States | |
| 98074510 | WWD US | Woodward Inc | 4,848 | $1,698,496.80 | 0.48% | $1,696,945.44 | 0.48% | 20,855.79 | Industrials | United States | |
| M6191J10 | FROG US | JFrog Ltd | 21,290 | $1,692,129.20 | 0.48% | $1,692,129.20 | 0.48% | 9,629.56 | Information Technology | United States | |
| 53122975 | FWONK US | Liberty Media Corp-Liberty Formula One | 18,548 | $1,683,972.92 | 0.48% | $1,683,972.92 | 0.48% | 22,740.53 | Communication Services | United States | |
| 31488V10 | FERG US | Ferguson Enterprises Inc | 7,197 | $1,632,711.42 | 0.46% | $1,626,306.09 | 0.46% | 43,867.33 | Industrials | United States | |
| 15675D10 | CBRS US | Cerebras Systems Inc | 6,833 | $1,619,352.67 | 0.46% | $1,619,352.67 | 0.46% | 13,512.46 | Information Technology | United States | |
| 01387210 | AA US | Alcoa Inc | 20,801 | $1,616,586.74 | 0.46% | $1,614,989.64 | 0.46% | 20,488.42 | Materials | United States | |
| 12504L10 | CBRE US | CBRE Group Inc | 12,628 | $1,579,005.12 | 0.45% | $1,579,005.12 | 0.45% | 36,616.84 | Real Estate | United States | |
| L8681T10 | SPOT US | Spotify Technology SA | 2,887 | $1,436,802.16 | 0.41% | $1,436,802.16 | 0.41% | 102,438.97 | Communication Services | Sweden | |
| 25765110 | DCI US | Donaldson Co Inc | 17,193 | $1,407,590.91 | 0.40% | $1,407,590.91 | 0.40% | 9,481.71 | Industrials | United States | |
| 80706P10 | SRRK US | Scholar Rock Holding Corp | 28,473 | $1,403,718.90 | 0.40% | $1,403,718.90 | 0.40% | 5,907.54 | Health Care | United States | |
| H8088L10 | SRAD US | Sportradar Group AG | 104,693 | $1,382,994.53 | 0.39% | $1,382,994.53 | 0.39% | 4,118.31 | Consumer Discretionary | Switzerland | |
| 44641310 | HII US | Huntington Ingalls Industries Inc | 4,473 | $1,384,617.15 | 0.39% | $1,378,444.41 | 0.39% | 12,143.14 | Industrials | United States | |
| 77070010 | HOOD US | Robinhood Markets Inc | 13,616 | $1,283,988.80 | 0.37% | $1,283,988.80 | 0.37% | 84,984.95 | Financials | United States | |
| 65566310 | NDSN US | Nordson Corp | 4,236 | $1,217,129.88 | 0.35% | $1,217,129.88 | 0.35% | 16,009.45 | Industrials | United States | |
| 15986410 | CRL US | Charles River Laboratories International Inc | 6,578 | $1,188,710.38 | 0.34% | $1,188,710.38 | 0.34% | 8,704.39 | Health Care | United States | |
| 73927610 | POWI US | Power Integrations Inc | 14,060 | $1,184,062.90 | 0.34% | $1,181,040.00 | 0.34% | 4,680.48 | Information Technology | United States | |
| BZ3DNP | AGI CN | Alamos Gold Inc | 28,484 | $1,168,574.36 | 0.33% | $1,168,574.36 | 0.33% | 17,229.25 | Materials | Canada | |
| 53390010 | LECO US | Lincoln Electric Holdings Inc | 4,306 | $1,113,057.94 | 0.32% | $1,113,057.94 | 0.32% | 14,161.92 | Industrials | United States | |
| G6543112 | NE US | Noble Corp PLC | 22,823 | $1,060,813.04 | 0.30% | $1,060,813.04 | 0.30% | 7,415.70 | Energy | United States | |
| G8711010 | FTI US | TechnipFMC PLC | 14,276 | $977,477.72 | 0.28% | $976,763.92 | 0.28% | 27,279.18 | Energy | United States | |
| 91820410 | VFC US | VF Corp | 49,456 | $849,654.08 | 0.24% | $849,654.08 | 0.24% | 6,730.60 | Consumer Discretionary | United States | |
| 05722G10 | BKR US | Baker Hughes Co | 13,048 | $833,506.24 | 0.24% | $833,506.24 | 0.24% | 63,373.35 | Energy | United States | |
| 33975010 | FND US | Floor & Decor Holdings Inc | 15,871 | $815,769.40 | 0.23% | $815,769.40 | 0.23% | 5,556.04 | Consumer Discretionary | United States | |
| 14428510 | CRS US | Carpenter Technology Corp | 1,595 | $748,183.30 | 0.21% | $748,023.10 | 0.21% | 23,301.56 | Industrials | United States | |
| G0260P10 | AS US | Amer Sports Inc | 20,690 | $736,150.20 | 0.21% | $736,150.20 | 0.21% | 20,574.91 | Consumer Discretionary | Finland | |
| 88077010 | TER US | Teradyne Inc | 1,933 | $723,667.46 | 0.21% | $723,541.23 | 0.21% | 58,595.30 | Information Technology | United States | |
| 87305R10 | TTMI US | TTM Technologies Inc | 3,948 | $685,846.56 | 0.20% | $685,846.56 | 0.20% | 18,040.83 | Information Technology | United States | |
| 14892910 | CAVA US | Cava Group Inc | 8,659 | $672,457.94 | 0.19% | $672,457.94 | 0.19% | 9,045.36 | Consumer Discretionary | United States | |
| 89055F10 | BLD US | TopBuild Corp | 1,604 | $669,637.92 | 0.19% | $669,637.92 | 0.19% | 11,748.79 | Consumer Discretionary | United States | |
| 04339D10 | ARXS US | Arxis Inc | 14,757 | $663,032.01 | 0.19% | $663,032.01 | 0.19% | 18,166.59 | Industrials | United States | |
| G4124C10 | GRAB US | Grab Holdings Ltd | 184,249 | $652,241.46 | 0.19% | $652,241.46 | 0.19% | 14,478.60 | Industrials | Singapore | |
| 65011110 | NYT US | New York Times Co | 7,956 | $598,370.76 | 0.17% | $598,370.76 | 0.17% | 12,176.27 | Communication Services | United States | |
| 81685010 | SMTC US | Semtech Corp | 3,069 | $468,145.26 | 0.13% | $468,145.26 | 0.13% | 14,209.28 | Information Technology | United States | |
| 68218910 | ON US | ON Semiconductor Corp | 3,378 | $407,454.36 | 0.12% | $407,454.36 | 0.12% | 47,271.36 | Information Technology | United States | |
| 92333F10 | VG US | Venture Global Inc | 32,137 | $386,929.48 | 0.11% | $386,929.48 | 0.11% | 29,895.32 | Energy | United States | |
| 22266T10 | CPNG US | Coupang Inc | 14,803 | $245,729.80 | 0.07% | $245,729.80 | 0.07% | 30,029.40 | Consumer Discretionary | South Korea | |
| 60365F10 | MMED US | MiniMed Group Inc | 18,423 | $221,812.92 | 0.06% | $221,812.92 | 0.06% | 3,381.07 | Health Care | United States | |
| CASH_USD | CASH_USD | Cash & Cash Equivalents | - | $3,898,715.66 | 1.11% | $3,886,152.76 | 1.11% | - | - | - | |
| 55291X10 | 55291X10 | MFS Institutional Money Market Short Term Vehicle FRB | - | $4,099,542.03 | 1.17% | $4,100,061.17 | - | - | - | United States | |
| CAPUSD | CAPUSD | CAPUSD | - | $116,791.19 | 0.03% | $116,791.19 | - | - | - | United States | |
| CASH_CAD | CASH_CAD | Canadian Dollar | - | $21.39 | 0.00% | $21.39 | - | - | - | Canada | |
| CASH_USD | CASH_USD | Us Dollars | - | $-330,720.99 | -0.09% | $-330,720.99 | - | - | - | United States | |
| CASH_DERV | - | Other | - | $0.00 | 0.00% | $12,562.90 | 0.00% | - | - | 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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