Basic Stats
| Portfolio Value | $ 14,955,639,458 |
| Current Positions | 95 |
Latest Holdings, Performance, AUM (from 13F, 13D)
OTCAX - MFS Mid Cap Growth Fund A has disclosed 95 total holdings in their latest SEC filings. Most recent portfolio value is calculated to be $ 14,955,639,458 USD. Actual Assets Under Management (AUM) is this value plus cash (which is not disclosed). OTCAX - MFS Mid Cap Growth Fund A’s top holdings are Howmet Aerospace Inc. (US:HWM) , Spotify Technology S.A. (US:SPOT) , Take-Two Interactive Software, Inc. (US:TTWO) , Guidewire Software, Inc. (US:GWRE) , and Verisk Analytics, Inc. (US:VRSK) . OTCAX - MFS Mid Cap Growth Fund A’s new positions include Carvana Co. (US:CVNA) , Dollar General Corporation (US:DG) , Exact Sciences Corporation (US:EXAS) , Sportradar Group AG (US:SRAD) , and Curtiss-Wright Corporation (US:CW) .
Top Increases This Quarter
We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.
| Security | Shares (MM) |
Value (MM$) |
Portfolio % | ΔPortfolio % |
|---|---|---|---|---|
| 7.82 | 219.24 | 1.4661 | 1.0579 | |
| 0.49 | 366.80 | 2.4530 | 1.0193 | |
| 3.06 | 266.09 | 1.7795 | 0.9886 | |
| 4.06 | 689.98 | 4.6142 | 0.8998 | |
| 0.37 | 119.79 | 0.8011 | 0.8011 | |
| 1.86 | 191.75 | 1.2823 | 0.6933 | |
| 2.01 | 232.95 | 1.5578 | 0.4402 | |
| 2.74 | 235.20 | 1.5729 | 0.4370 | |
| 0.34 | 114.83 | 0.7680 | 0.4340 | |
| 1.89 | 157.80 | 1.0553 | 0.4261 |
Top Decreases This Quarter
We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.
| Security | Shares (MM) |
Value (MM$) |
Portfolio % | ΔPortfolio % |
|---|---|---|---|---|
| 0.30 | 130.03 | 0.8696 | -1.2759 | |
| 0.93 | 46.24 | 0.3092 | -0.8993 | |
| 84.27 | 84.27 | 0.5636 | -0.8091 | |
| 0.65 | 85.83 | 0.5740 | -0.7247 | |
| 0.53 | 57.34 | 0.3835 | -0.7142 | |
| 0.99 | 61.39 | 0.4105 | -0.6858 | |
| 0.93 | 44.89 | 0.3002 | -0.6626 | |
| 0.31 | 177.19 | 1.1849 | -0.5801 | |
| 0.38 | 221.33 | 1.4802 | -0.5078 | |
| 0.73 | 486.13 | 3.2510 | -0.4782 |
13F and Fund Filings
This form was filed on 2025-07-25 for the reporting period 2025-05-31. Click the link icon to see the full transaction history.
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| Security | Type | Avg Share Price | Shares (MM) |
ΔShares (%) |
ΔShares (%) |
Value ($MM) |
Portfolio (%) |
ΔPortfolio (%) |
|
|---|---|---|---|---|---|---|---|---|---|
| HWM / Howmet Aerospace Inc. | 4.06 | 0.00 | 689.98 | 24.37 | 4.6142 | 0.8998 | |||
| SPOT / Spotify Technology S.A. | 0.73 | -20.22 | 486.13 | -12.72 | 3.2510 | -0.4782 | |||
| TTWO / Take-Two Interactive Software, Inc. | 2.04 | 0.00 | 462.17 | 6.75 | 3.0908 | 0.1919 | |||
| GWRE / Guidewire Software, Inc. | 2.00 | 0.00 | 429.91 | 6.81 | 2.8750 | 0.1800 | |||
| VRSK / Verisk Analytics, Inc. | 1.19 | 0.00 | 374.60 | 5.80 | 2.5052 | 0.1346 | |||
| AXON / Axon Enterprise, Inc. | 0.49 | 20.64 | 366.80 | 71.30 | 2.4530 | 1.0193 | |||
| LPLA / LPL Financial Holdings Inc. | 0.89 | 2.27 | 343.41 | 6.52 | 2.2966 | 0.1380 | |||
| AJG / Arthur J. Gallagher & Co. | 0.94 | 0.00 | 326.81 | 2.87 | 2.1855 | 0.0585 | |||
| TYL / Tyler Technologies, Inc. | 0.55 | 0.00 | 319.24 | -5.17 | 2.1349 | -0.1190 | |||
| CNSWF / Constellation Software Inc. | 0.08 | 0.00 | 307.50 | 5.18 | 2.0564 | 0.0991 | |||
| WAB / Westinghouse Air Brake Technologies Corporation | 1.48 | -4.77 | 298.45 | 3.94 | 1.9959 | 0.0734 | |||
| LYV / Live Nation Entertainment, Inc. | 2.06 | 16.43 | 282.18 | 11.42 | 1.8871 | 0.1915 | |||
| LNG / Cheniere Energy, Inc. | 1.19 | 5.53 | 281.67 | 9.42 | 1.8837 | 0.1602 | |||
| RBLX / Roblox Corporation | 3.06 | 64.82 | 266.09 | 125.27 | 1.7795 | 0.9886 | |||
| MASI / Masimo Corporation | 1.59 | 23.67 | 257.82 | 6.46 | 1.7242 | 0.1028 | |||
| NTRA / Natera, Inc. | 1.54 | -5.80 | 242.24 | -4.51 | 1.6200 | -0.0785 | |||
| TRU / TransUnion | 2.82 | 3.00 | 241.65 | -4.57 | 1.6160 | -0.0794 | |||
| ARES / Ares Management Corporation | 1.43 | 0.00 | 237.45 | -3.18 | 1.5880 | -0.0541 | |||
| BFAM / Bright Horizons Family Solutions Inc. | 1.83 | 6.75 | 236.49 | 6.37 | 1.5815 | 0.0929 | |||
| DXCM / DexCom, Inc. | 2.74 | 42.78 | 235.20 | 38.63 | 1.5729 | 0.4370 | |||
| EXE / Expand Energy Corporation | 2.01 | 18.83 | 232.95 | 39.56 | 1.5578 | 0.4402 | |||
| VST / Vistra Corp. | 1.43 | -15.08 | 229.42 | 2.01 | 1.5343 | 0.0285 | |||
| VMC / Vulcan Materials Company | 0.85 | -6.61 | 226.19 | 0.10 | 1.5126 | -0.0003 | |||
| TKO / TKO Group Holdings, Inc. | 1.42 | 3.40 | 223.83 | 8.33 | 1.4969 | 0.1134 | |||
| HUBS / HubSpot, Inc. | 0.38 | -8.51 | 221.33 | -25.46 | 1.4802 | -0.5078 | |||
| CPNG / Coupang, Inc. | 7.82 | 203.78 | 219.24 | 259.54 | 1.4661 | 1.0579 | |||
| VEEV / Veeva Systems Inc. | 0.78 | -13.81 | 218.05 | 7.56 | 1.4582 | 0.1009 | |||
| ASND / Ascendis Pharma A/S - Depositary Receipt (Common Stock) | 1.30 | 0.00 | 212.44 | 4.00 | 1.4207 | 0.0530 | |||
| ORLY / O'Reilly Automotive, Inc. | 0.15 | 10.71 | 199.48 | 10.22 | 1.3340 | 0.1223 | |||
| CPRT / Copart, Inc. | 3.82 | 6.83 | 196.73 | 0.36 | 1.3156 | 0.0031 | |||
| OKTA / Okta, Inc. | 1.86 | 91.17 | 191.75 | 117.96 | 1.2823 | 0.6933 | |||
| MPWR / Monolithic Power Systems, Inc. | 0.29 | -7.55 | 191.23 | 0.15 | 1.2788 | 0.0004 | |||
| CBRE / CBRE Group, Inc. | 1.51 | 11.66 | 188.93 | -1.65 | 1.2635 | -0.0227 | |||
| STE / STERIS plc | 0.76 | 32.28 | 186.59 | 47.94 | 1.2478 | 0.4034 | |||
| DKNG / DraftKings Inc. | 5.03 | 0.00 | 180.38 | -18.19 | 1.2063 | -0.2700 | |||
| WTKWY / Wolters Kluwer N.V. - Depositary Receipt (Common Stock) | 1.01 | -23.55 | 179.63 | -11.60 | 1.2013 | -0.1592 | |||
| CDNS / Cadence Design Systems, Inc. | 0.63 | 17.64 | 179.52 | 34.82 | 1.2006 | 0.3090 | |||
| MORN / Morningstar, Inc. | 0.58 | -20.17 | 178.63 | -21.51 | 1.1946 | -0.3292 | |||
| MSCI / MSCI Inc. | 0.31 | -29.63 | 177.19 | -32.79 | 1.1849 | -0.5801 | |||
| CSGP / CoStar Group, Inc. | 2.36 | 0.00 | 173.71 | -3.53 | 1.1617 | -0.0439 | |||
| HOOD / Robinhood Markets, Inc. | 2.42 | 19.45 | 160.25 | 57.72 | 1.0716 | 0.3914 | |||
| NDAQ / Nasdaq, Inc. | 1.89 | 28.63 | 157.80 | 92.44 | 1.0553 | 0.4261 | |||
| BURL / Burlington Stores, Inc. | 0.68 | -0.30 | 154.20 | -8.72 | 1.0312 | -0.0998 | |||
| GFL / GFL Environmental Inc. | 3.06 | 0.00 | 154.18 | 11.67 | 1.0311 | 0.1067 | |||
| AME / AMETEK, Inc. | 0.86 | -16.24 | 153.90 | -20.91 | 1.0292 | -0.2737 | |||
| DDOG / Datadog, Inc. | 1.30 | -20.35 | 153.13 | -19.44 | 1.0241 | -0.2486 | |||
| CG / The Carlyle Group Inc. | 3.21 | 0.00 | 145.20 | -9.31 | 0.9710 | -0.1009 | |||
| NOW / ServiceNow, Inc. | 0.14 | -10.73 | 142.95 | -2.93 | 0.9560 | -0.0300 | |||
| TW / Tradeweb Markets Inc. | 0.97 | 24.99 | 139.61 | 33.37 | 0.9336 | 0.2328 | |||
| IT / Gartner, Inc. | 0.30 | -53.67 | 130.03 | -59.42 | 0.8696 | -1.2759 | |||
| CVNA / Carvana Co. | 0.37 | 119.79 | 0.8011 | 0.8011 | |||||
| WING / Wingstop Inc. | 0.34 | 58.17 | 114.83 | 130.21 | 0.7680 | 0.4340 | |||
| A / Agilent Technologies, Inc. | 1.02 | -10.90 | 114.56 | -22.04 | 0.7661 | -0.2178 | |||
| BJ / BJ's Wholesale Club Holdings, Inc. | 1.01 | 93.72 | 114.21 | 116.59 | 0.7638 | 0.4107 | |||
| WAT / Waters Corporation | 0.33 | -6.09 | 113.65 | -13.08 | 0.7600 | -0.1154 | |||
| ARMK / Aramark | 2.74 | 0.00 | 110.96 | 9.31 | 0.7420 | 0.0624 | |||
| PWR / Quanta Services, Inc. | 0.31 | -38.94 | 104.58 | -19.43 | 0.6994 | -0.1697 | |||
| TPG / TPG Inc. | 2.03 | -19.25 | 97.65 | -29.54 | 0.6531 | -0.2749 | |||
| PTC / PTC Inc. | 0.56 | -13.85 | 94.94 | -11.38 | 0.6349 | -0.0824 | |||
| H / Hyatt Hotels Corporation | 0.65 | -52.76 | 85.83 | -55.75 | 0.5740 | -0.7247 | |||
| ACVA / ACV Auctions Inc. | 5.21 | 0.00 | 85.39 | 1.99 | 0.5711 | 0.0105 | |||
| CCJ / Cameco Corporation | 1.44 | 0.00 | 84.41 | 32.90 | 0.5645 | 0.1393 | |||
| US55291X1090 / MFS Institutional Money Market Portfolio | 84.27 | -58.89 | 84.27 | -58.90 | 0.5636 | -0.8091 | |||
| QTWO / Q2 Holdings, Inc. | 0.95 | 0.00 | 83.49 | 0.17 | 0.5583 | 0.0003 | |||
| IL0011974909 / Oddity Tech Ltd | 1.09 | 11.62 | 80.82 | 74.46 | 0.5405 | 0.2303 | |||
| CHD / Church & Dwight Co., Inc. | 0.74 | 10.84 | 72.39 | -2.01 | 0.4841 | -0.0105 | |||
| CMG / Chipotle Mexican Grill, Inc. | 1.44 | -37.58 | 72.29 | -42.08 | 0.4834 | -0.3522 | |||
| ESTC / Elastic N.V. | 0.88 | 52.16 | 71.54 | 5.75 | 0.4784 | 0.0255 | |||
| XYZ / Block, Inc. | 0.99 | -60.35 | 61.39 | -62.51 | 0.4105 | -0.6858 | |||
| PEGA / Pegasystems Inc. | 0.59 | 0.00 | 57.96 | 25.01 | 0.3876 | 0.0772 | |||
| VRT / Vertiv Holdings Co | 0.53 | -69.16 | 57.34 | -65.02 | 0.3835 | -0.7142 | |||
| DG / Dollar General Corporation | 0.58 | 56.22 | 0.3760 | 0.3760 | |||||
| HXL / Hexcel Corporation | 1.02 | 0.00 | 53.85 | -16.54 | 0.3601 | -0.0719 | |||
| EXAS / Exact Sciences Corporation | 0.94 | 52.77 | 0.3529 | 0.3529 | |||||
| CHWY / Chewy, Inc. | 1.16 | -1.13 | 52.46 | -34.46 | 0.3508 | -0.1588 | |||
| TDG / TransDigm Group Incorporated | 0.04 | 0.00 | 52.22 | 7.40 | 0.3493 | 0.0237 | |||
| MANH / Manhattan Associates, Inc. | 0.27 | 0.00 | 50.76 | 6.73 | 0.3394 | 0.0210 | |||
| SRAD / Sportradar Group AG | 2.06 | 49.26 | 0.3294 | 0.3294 | |||||
| HUBB / Hubbell Incorporated | 0.12 | -49.90 | 48.25 | -47.47 | 0.3227 | -0.2923 | |||
| AZEK / The AZEK Company Inc. | 0.93 | -75.76 | 46.24 | -74.38 | 0.3092 | -0.8993 | |||
| TSCO / Tractor Supply Company | 0.93 | -64.30 | 44.89 | -68.78 | 0.3002 | -0.6626 | |||
| NET / Cloudflare, Inc. | 0.24 | -42.39 | 40.02 | -34.23 | 0.2676 | -0.1398 | |||
| 27M / Melrose Industries PLC | 6.30 | 74.61 | 39.76 | 35.91 | 0.2659 | 0.0700 | |||
| CW / Curtiss-Wright Corporation | 0.09 | 38.69 | 0.2587 | 0.2587 | |||||
| BWXT / BWX Technologies, Inc. | 0.30 | 37.98 | 0.2540 | 0.2540 | |||||
| TECH / Bio-Techne Corporation | 0.78 | -44.14 | 37.64 | -56.22 | 0.2517 | -0.3239 | |||
| FND / Floor & Decor Holdings, Inc. | 0.45 | 0.00 | 32.32 | -25.81 | 0.2161 | -0.0755 | |||
| ALAB / Astera Labs, Inc. | 0.34 | -46.69 | 30.97 | -34.95 | 0.2071 | -0.1117 | |||
| TTAN / ServiceTitan, Inc. | 0.28 | 0.00 | 30.46 | 16.57 | 0.2037 | 0.0288 | |||
| EXPE / Expedia Group, Inc. | 0.12 | 19.34 | 0.1293 | 0.1293 | |||||
| S / SentinelOne, Inc. | 1.04 | 52.97 | 18.27 | 30.58 | 0.1222 | 0.0285 | |||
| CDW / CDW Corporation | 0.10 | 0.00 | 18.21 | 1.21 | 0.1218 | 0.0013 | |||
| VFC / V.F. Corporation | 1.17 | -21.03 | 14.52 | -60.53 | 0.0971 | -0.1493 | |||
| TEM / Tempus AI, Inc. | 0.23 | 0.00 | 12.58 | -1.78 | 0.0841 | -0.0016 | |||
| MGMXX / JPMorgan Trust II - JPMorgan U.S. Government Money Market Fund IM | 11.40 | 0.68 | 11.40 | 0.69 | 0.0762 | 0.0004 | |||
| CA21037X1345 / CONSTELLATION SOFTWARE INC | 0.12 | 0.00 | 0.00 | 0.0000 | 0.0000 |
