NPORT-P false 0000887147 XXXXXXXX S000002102 C000005472 C000005471 C000005470 C000219320 C000159676 T. ROWE PRICE MID-CAP GROWTH FUND, INC. 811-06665 0000887147 549300H4FB9U29ZK0L79 100 East Pratt Street Baltimore 21202 410-345-2000 T. Rowe Price Mid-Cap Growth Fund, Inc. S000002102 80RXPO345YBHPM0J9835 2024-12-31 2024-09-30 N 31359512401.820007 17725583.590000 31341786818.230007 4047088.680000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 USD N Acadia Healthcare Co Inc 5493005CW985Y9D0NC11 00404A109 2993500.000000 NS USD 189817835.000000 0.6056382047 Long EC CORP US N 1 N N N Agilent Technologies Inc QUIX8Y7A2WP0XRMW7G29 00846U101 3989900.000000 NS USD 592420352.000000 1.8901932919 Long EC CORP US N 1 N N N Align Technology Inc 549300N5YSE0U3LCP840 016255101 957600.000000 NS USD 243536832.000000 0.7770355705 Long EC CORP US N 1 N N N Alnylam Pharmaceuticals Inc 529900S3ZI14OWRJII50 02043Q107 1520400.000000 NS USD 418155612.000000 1.3341792363 Long EC CORP US N 1 N N N Amphenol Corp 549300D3L3G0R4U4VT04 032095101 2742400.000000 NS USD 178694784.000000 0.5701486805 Long EC CORP US N 1 N N N Apellis Pharmaceuticals Inc 254900HS0ZFRXXSB9D42 03753U106 1200000.000000 NS USD 34608000.000000 0.1104212730 Long EC CORP US N 1 N N N Argenx SE 7245009C5FZE6G9ODQ71 04016X101 250000.000000 NS USD 135520000.000000 0.4323939818 Long EC CORP NL N 1 N N N Ascendis Pharma A/S 549300B66JN3W3J8GH73 04351P101 670000.000000 NS USD 100037700.000000 0.3191831422 Long EC CORP DK N 1 N N N Assurant Inc H3F39CAXWQRVWURFXL38 04621X108 1982500.000000 NS USD 394239950.000000 1.2578732422 Long EC CORP US N 1 N N N Atlassian Corp 549300V7ZY5P02D2MY38 049468101 897200.000000 NS USD 142484332.000000 0.4546145784 Long EC CORP US N 1 N N N Avantor Inc N/A 05352A100 19830100.000000 NS USD 513004687.000000 1.6368074034 Long EC CORP US N 1 N N N Avery Dennison Corp 549300PW7VPFCYKLIV37 053611109 1973800.000000 NS USD 435736088.000000 1.3902720050 Long EC CORP US N 1 N N N BWX Technologies Inc 549300NP85N265KWMS58 05605H100 1722400.000000 NS USD 187224880.000000 0.5973650484 Long EC CORP US N 1 N N N Ball Corp 0BGI85ALH27ZJP15DY16 058498106 8300000.000000 NS USD 563653000.000000 1.7984073571 Long EC CORP US N 1 N N N Bath & Body Works Inc GR3KVMWVCR54YWQNXU90 070830104 4735500.000000 NS USD 151157160.000000 0.4822863511 Long EC CORP US N 1 N N N Biogen Inc W8J5WZB5IY3K0NDQT671 09062X103 1296400.000000 NS USD 251294176.000000 0.8017863738 Long EC CORP US N 1 N N N Boston Beer Co Inc/The 529900Q02MQ0DCQNRM58 100557107 199500.000000 NS USD 57683430.000000 0.1840463989 Long EC CORP US N 1 N N N Bright Horizons Family Solutions Inc N/A 109194100 1145400.000000 NS USD 160504902.000000 0.5121115236 Long EC CORP US N 1 N N N Broadridge Financial Solutions Inc 549300KZDJZQ2YIHRC28 11133T103 1288400.000000 NS USD 277044652.000000 0.8839465778 Long EC CORP US N 1 N N N Bruker Corp LEBZ6VLQ6I8XB1NHVY15 116794108 4488600.000000 NS USD 309982716.000000 0.9890397054 Long EC CORP US N 1 N N N Burlington Stores Inc 5299003Z37DVGKKC1W09 122017106 1120300.000000 NS USD 295176644.000000 0.9417990292 Long EC CORP US N 1 N N N Cboe Global Markets Inc 529900RLNSGA90UPEH54 12503M108 1271800.000000 NS USD 260553666.000000 0.8313299670 Long EC CORP US N 1 N N N CCC Intelligent Solutions Holdings Inc N/A 12510Q100 24936600.000000 NS USD 275549430.000000 0.8791758798 Long EC CORP US N 1 N N N Casey s General Stores Inc 549300CAFWSI86V66Q65 147528103 785000.000000 NS USD 294932350.000000 0.9410195778 Long EC CORP US N 1 N N N Cheniere Energy Inc MIHC87W9WTYSYZWV1J40 16411R208 2328700.000000 NS USD 418793408.000000 1.3362142064 Long EC CORP US N 1 N N N Chesapeake Energy Corp X2MT1W32SPAZ9WSKLE78 165167735 1688700.000000 NS USD 138895575.000000 0.4431641878 Long EC CORP US N 1 N N N Cognex Corp 549300JQTYZCLC43S226 192422103 2614200.000000 NS USD 105875100.000000 0.3378081174 Long EC CORP US N 1 N N N Enovis Corp 635400OP2DYYYMOIYL17 194014502 3204100.000000 NS USD 137936505.000000 0.4401041517 Long EC CORP US N 1 N N N Constellation Brands Inc 5493005GKEG8QCVY7037 21036P108 548600.000000 NS USD 141368734.000000 0.4510551195 Long EC CORP US N 1 N N N Cooper Cos Inc/The QJKMVPIGLH7530PCUE20 216648501 3369600.000000 NS USD 371801664.000000 1.1862810061 Long EC CORP US N 1 N N N QuidelOrtho Corp 549300YU8CMO9HF53113 219798105 3279500.000000 NS USD 149545200.000000 0.4771431854 Long EC CORP US N 1 N N N Corpay Inc 549300DG6RR0NQSFLN74 219948106 897500.000000 NS USD 280702100.000000 0.8956161358 Long EC CORP US N 1 N N N CoStar Group Inc N/A 22160N109 2500000.000000 NS USD 188600000.000000 0.6017525456 Long EC CORP US N 1 N N N Crowdstrike Holdings Inc 549300YBY08K9KM4HX32 22788C105 200000.000000 NS USD 56094000.000000 0.1789751182 Long EC CORP US N 1 N N N Cytokinetics Inc 549300BE5DY1HW7IHA64 23282W605 1994600.000000 NS USD 105314880.000000 0.3360206634 Long EC CORP US N 1 N N N Dollar General Corp OPX52SQVOZI8IVSWYU66 256677105 673300.000000 NS USD 56940981.000000 0.1816775200 Long EC CORP US N 1 N N N Dollar Tree Inc 549300PMSTQITB1WHR43 256746108 4500000.000000 NS USD 316440000.000000 1.0096425001 Long EC CORP US N 1 N N N Domino s Pizza Inc 25490005ZWM1IF9UXU57 25754A201 1231600.000000 NS USD 529760424.000000 1.6902687363 Long EC CORP US N 1 N N N DraftKings Inc 2549006G33IUL6IVOD83 26142V105 8731500.000000 NS USD 342274800.000000 1.0920717507 Long EC CORP US N 1 N N N Axis Capital Holdings Ltd 635400VD2NQBYAHMEM55 000000000 1486800.000000 NS USD 118364148.000000 0.3776560305 Long EC CORP BM N 1 N N N EQT Corp 4NT01YGM4X7ZX86ISY52 26884L109 7381300.000000 NS USD 270450832.000000 0.8629081474 Long EC CORP US N 1 N N N Equifax Inc 5493004MCF8JDC86VS77 294429105 1375000.000000 NS USD 404057500.000000 1.2891973975 Long EC CORP US N 1 N N N Esab Corp 549300ZNV0SWBXEIWT04 29605J106 3084182.000000 NS USD 327879388.420000 1.0461413394 Long EC CORP US N 1 N N N Exact Sciences Corp 549300VM3X1FYD4N9Z14 30063P105 1650000.000000 NS USD 112398000.000000 0.3586202684 Long EC CORP US N 1 N N N Fair Isaac Corp RI6HET5SJUEY30V1PS26 303250104 175000.000000 NS USD 340116000.000000 1.0851838218 Long EC CORP US N 1 N N N Ferguson Enterprises Inc 2138003JYQMRP3SLX189 31488V107 797800.000000 NS USD 158419146.000000 0.5054566510 Long EC CORP US N 1 N N N Five Below Inc 529900AAXP5Z6BGI7418 33829M101 1746300.000000 NS USD 154285605.000000 0.4922680570 Long EC CORP US N 1 N N N Fortinet Inc 549300O0QJWDBAS0QX03 34959E109 3286400.000000 NS USD 254860320.000000 0.8131646146 Long EC CORP US N 1 N N N Fortive Corp 549300MU9YQJYHDQEF63 34959J108 4650000.000000 NS USD 367024500.000000 1.1710388502 Long EC CORP US N 1 N N N Hilton Worldwide Holdings Inc 549300HVGPK36ICB0B89 43300A203 1844900.000000 NS USD 425249450.000000 1.3568130383 Long EC CORP US N 1 N N N Hologic Inc 549300DYP6F5ZJL0LB74 436440101 10500000.000000 NS USD 855330000.000000 2.7290403223 Long EC CORP US N 1 N N N Howmet Aerospace Inc 549300HO5WFZUT5N2T22 443201108 594700.000000 NS USD 59618675.000000 0.1902210469 Long EC CORP US N 1 N N N JB Hunt Transport Services Inc 549300XCD1MPI1C5GK90 445658107 2564800.000000 NS USD 441991984.000000 1.4102322454 Long EC CORP US N 1 N N N ITT Inc 549300KDSERHTJOXUS80 45073V108 299400.000000 NS USD 44763294.000000 0.1428230441 Long EC CORP US N 1 N N N IDEX Corp 549300U5Y5EL6PHYLF13 45167R104 817600.000000 NS USD 175375200.000000 0.5595571210 Long EC CORP US N 1 N N N Ingersoll Rand Inc 5299004C02FMZCUOIR50 45687V106 4979200.000000 NS USD 488758272.000000 1.5594460993 Long EC CORP US N 1 N N N Insmed Inc 529900Q55QAG41CCAC11 457669307 254845.000000 NS USD 18603685.000000 0.0593574486 Long EC CORP US N 1 N N N Intercontinental Exchange Inc 5493000F4ZO33MV32P92 45866F104 1796200.000000 NS USD 288541568.000000 0.9206289663 Long EC CORP US N 1 N N N Ionis Pharmaceuticals Inc 549300SI4ZGLG0BLUZ92 462222100 5300000.000000 NS USD 212318000.000000 0.6774278736 Long EC CORP US N 1 N N N KKR & Co Inc 54930013V5I303TF9571 48251W104 500000.000000 NS USD 65290000.000000 0.2083161384 Long EC CORP US N 1 N N N Keysight Technologies Inc 549300GLKVIO8YRCYN02 49338L103 1991200.000000 NS USD 316461416.000000 1.0097108306 Long EC CORP US N 1 N N N Lattice Semiconductor Corp 549300LRBBPZDQ2II567 518415104 7683700.000000 NS USD 407773959.000000 1.3010552377 Long EC CORP US N 1 N N N Liberty Media Corp-Liberty Formula One N/A 531229755 3980600.000000 NS USD 308217858.000000 0.9834086990 Long EC CORP US N 1 N N N Littelfuse Inc 549300MY7HLQFYTPCX75 537008104 205872.000000 NS USD 54607548.000000 0.1742324020 Long EC CORP US N 1 N N N Lululemon Athletica Inc 549300D9GZ4BMLDW5T40 550021109 299300.000000 NS USD 81215055.000000 0.2591270736 Long EC CORP US N 1 N N N Maplebear Inc N/A 565394103 2000000.000000 NS USD 81480000.000000 0.2599724147 Long EC CORP US N 1 N N N Markel Group Inc 549300SCNO12JLWIK605 570535104 74600.000000 NS USD 117016068.000000 0.3733548080 Long EC CORP US N 1 N N N MarketAxess Holdings Inc 5493002U1CA1XJOVID83 57060D108 996000.000000 NS USD 255175200.000000 0.8141692798 Long EC CORP US N 1 N N N Martin Marietta Materials Inc 5299005MZ4WZECVATV08 573284106 792700.000000 NS USD 426670775.000000 1.3613479585 Long EC CORP US N 1 N N N Marvell Technology Inc N/A 573874104 12268800.000000 NS USD 884825856.000000 2.8231506427 Long EC CORP US N 1 N N N Match Group Inc 15OMOPB0A8K0EFUVD031 57667L107 4970200.000000 NS USD 188072368.000000 0.6000690678 Long EC CORP US N 1 N N N McCormick & Co Inc/MD 549300JQQA6MQ4OJP259 579780206 1445500.000000 NS USD 118964650.000000 0.3795720094 Long EC CORP US N 1 N N N Mettler-Toledo International Inc 5493000BD5GJNUDIUG10 592688105 129300.000000 NS USD 193911210.000000 0.6186986438 Long EC CORP US N 1 N N N Microchip Technology Inc 5493007PTFULNYZJ1R12 595017104 8963100.000000 NS USD 719647299.000000 2.2961272220 Long EC CORP US N 1 N N N Molina Healthcare Inc 549300NQQCEQ46YHZ591 60855R100 772600.000000 NS USD 266207056.000000 0.8493678345 Long EC CORP US N 1 N N N MongoDB Inc 549300TPTG69WKWE1Z37 60937P106 245800.000000 NS USD 66452030.000000 0.2120237445 Long EC CORP US N 1 N N N New York Times Co/The 529900J1WEMMIW7BOH57 650111107 3335200.000000 NS USD 185670584.000000 0.5924058672 Long EC CORP US N 1 N N N Onestream Inc N/A 68278B107 1102703.000000 NS USD 37381631.700000 0.1192709016 Long EC CORP US N 1 N N N PTC Inc 54930050SSMU8SKDJ030 69370C100 2792900.000000 NS USD 504565314.000000 1.6098804989 Long EC CORP US N 1 N N N Paylocity Holding Corp 549300VH75FTB4DIEE07 70438V106 1777946.000000 NS USD 293307751.620000 0.9358360878 Long EC CORP US N 1 N N N Planet Fitness Inc 549300LLE5HUPF6H8G33 72703H101 1895200.000000 NS USD 153928144.000000 0.4911275317 Long EC CORP US N 1 N N N Pure Storage Inc 549300NPDB0BZTK3WO90 74624M102 3243100.000000 NS USD 162933344.000000 0.5198597800 Long EC CORP US N 1 N N N Quanta Services Inc SHVRXXEACT60MMH07S24 74762E102 396600.000000 NS USD 118246290.000000 0.3772799894 Long EC CORP US N 1 N N N RPM International Inc 549300TJCKW4BRXPJ474 749685103 1192700.000000 NS USD 144316700.000000 0.4604609840 Long EC CORP US N 1 N N N Range Resources Corp H3Y3WLYCX0BTO1TRW162 75281A109 3471600.000000 NS USD 106786416.000000 0.3407157882 Long EC CORP US N 1 N N N Raymond James Financial Inc RGUZHJ05YTITL6D76949 754730109 1994600.000000 NS USD 244258716.000000 0.7793388342 Long EC CORP US N 1 N N N Reddit Inc N/A 75734B100 1496200.000000 NS USD 98629504.000000 0.3146901119 Long EC CORP US N 1 N N N T. Rowe Price Treasury Reserve Fund 5493007QR86JJLYO6D96 76105Y208 1312875939.120000 NS USD 1312875939.120000 4.1888994611 Long STIV RF US N 1 N N N Reynolds Consumer Products Inc N/A 76171L106 3905600.000000 NS USD 121464160.000000 0.3875470174 Long EC CORP US N 1 N N N Roku Inc 549300KR6ITU0YIR1T71 77543R102 1000000.000000 NS USD 74660000.000000 0.2382123279 Long EC CORP US N 1 N N N Roper Technologies Inc 54930003T4SXCIWVXY35 776696106 174500.000000 NS USD 97098780.000000 0.3098061402 Long EC CORP US N 1 N N N Ross Stores Inc 549300ENZFLPGRDFZQ60 778296103 2788500.000000 NS USD 419697135.000000 1.3390976636 Long EC CORP US N 1 N N N Sarepta Therapeutics Inc 549300IKDPIED8J8IG21 803607100 891900.000000 NS USD 111389391.000000 0.3554021717 Long EC CORP US N 1 N N N Sealed Air Corp Q0M0CZB4YN6JZ65WXI09 81211K100 4830100.000000 NS USD 175332630.000000 0.5594212960 Long EC CORP US N 1 N N N Southwest Airlines Co UDTZ87G0STFETI6HGH41 844741108 500000.000000 NS USD 14815000.000000 0.0472691620 Long EC CORP US N 1 N N N TPG Inc 549300NLO4R8MX77XJ02 872657101 748100.000000 NS USD 43060636.000000 0.1373904948 Long EC CORP US N 1 N N N Teleflex Inc UUL85LWXB4NGSWWXIQ25 879369106 2867100.000000 NS USD 709091172.000000 2.2624465418 Long EC CORP US N 1 N N N Textron Inc 3PPKBHUG1HD6BO7RNR87 883203101 6232800.000000 NS USD 552101424.000000 1.7615505689 Long EC CORP US N 1 N N N Trade Desk Inc/The 549300GXPD31VT3E0P46 88339J105 6980700.000000 NS USD 765433755.000000 2.4422147960 Long EC CORP US N 1 N N N Toast Inc 549300TN1PZNLCD4I551 888787108 6236800.000000 NS USD 176563808.000000 0.5633495277 Long EC CORP US N 1 N N N Tractor Supply Co 549300OJ9VZHZRO6I137 892356106 274200.000000 NS USD 79773006.000000 0.2545260309 Long EC CORP US N 1 N N N Tradeweb Markets Inc N/A 892672106 1310000.000000 NS USD 162007700.000000 0.5169063938 Long EC CORP US N 1 N N N TransUnion 549300ZS772LUNUMRB03 89400J107 1791200.000000 NS USD 187538640.000000 0.5983661400 Long EC CORP US N 1 N N N TreeHouse Foods Inc 5493007M7EVHE470Q576 89469A104 2320100.000000 NS USD 97397798.000000 0.3107601955 Long EC CORP US N 1 N N N Tyler Technologies Inc 25490040SMU4Z8LBCW70 902252105 736300.000000 NS USD 429793036.000000 1.3713099336 Long EC CORP US N 1 N N N UL Solutions Inc 549300F7CUV5ESKV9P71 903731107 861516.000000 NS USD 42472738.800000 0.1355147332 Long EC CORP US N 1 N N N Ulta Beauty Inc 529900CIV6HN8M28YM82 90384S303 635000.000000 NS USD 247091200.000000 0.7883762385 Long EC CORP US N 1 N N N United Rentals Inc 5323X5O7RN0NKFCDRY08 911363109 284200.000000 NS USD 230125266.000000 0.7342442450 Long EC CORP US N 1 N N N Vaxcyte Inc 254900M7NMHTGASX8D95 92243G108 796100.000000 NS USD 90970347.000000 0.2902525868 Long EC CORP US N 1 N N N Veeva Systems Inc 549300YZEXPDB92M2F02 922475108 2418400.000000 NS USD 507549608.000000 1.6194022726 Long EC CORP US N 1 N N N Veralto Corp 635400FJE6GSOJUSNY27 92338C103 1600000.000000 NS USD 178976000.000000 0.5710459363 Long EC CORP US N 1 N N N Verisk Analytics Inc 549300I1YSWNIRKBWP67 92345Y106 695300.000000 NS USD 186312588.000000 0.5944542635 Long EC CORP US N 1 N N N Waste Connections Inc 549300HDLRTPBQU69P29 94106B101 690300.000000 NS USD 123439446.000000 0.3938494213 Long EC CORP CA N 1 N N N West Pharmaceutical Services Inc 5493007NKRGM1RJQ1P16 955306105 349200.000000 NS USD 104815872.000000 0.3344285143 Long EC CORP US N 1 N N N Yum Brands Inc 549300JE8XHZZ7OHN517 988498101 2931800.000000 NS USD 409601778.000000 1.3068871292 Long EC CORP US N 1 N N N Zoom Video Communications Inc 549300T9GCHU0ODOM055 98980L101 2489700.000000 NS USD 173631678.000000 0.5539941900 Long EC CORP US N 1 N N N NXP Semiconductors NV 724500M9BY5293JDF951 000000000 669100.000000 NS USD 160590691.000000 0.5123852444 Long EC CORP NL N 1 N N N CRISPR Therapeutics AG 506700O6IRRIQLT3W370 000000000 993900.000000 NS USD 46693422.000000 0.1489813656 Long EC CORP CH N 1 N N N TechnipFMC PLC 549300D5I93QWCJTCK36 000000000 12300000.000000 NS USD 322629000.000000 1.0293893002 Long EC CORP GB N 1 N N N Spotify Technology SA 549300B4X0JHWV0DTD60 000000000 625000.000000 NS USD 230331250.000000 0.7349014635 Long EC CORP LU N 1 N N N Alcon Inc 549300LDT5AP8S0NBM78 H01301128 3092400.000000 NS USD 309456468.000000 0.9873606435 Long EC CORP CH N 1 N N N Weatherford International PLC 529900LPBDSCQDJKHQ39 000000000 1400000.000000 NS USD 118888000.000000 0.3793274477 Long EC CORP IE N 1 N N N On Holding AG N/A 000000000 1650000.000000 NS USD 82747500.000000 0.2640165364 Long EC CORP CH N 1 N N N Viking Holdings Ltd N/A 000000000 4000000.000000 NS USD 139560000.000000 0.4452841212 Long EC CORP BM N 1 N N N Birkenstock Holding Plc 529900CQ8LQKQ7LIT631 M2029K104 1900000.000000 NS USD 93651000.000000 0.2988055548 Long EC CORP JE N 1 N N N Caris Life Sciences Inc 549300LX5LO78M5VPY43 TC13PNHL5 3278524.000000 NS USD 11933827.360000 0.0380764104 Long EP CORP US Y 3 N N N N/A N/A TC25HIZF2 408411.000000 NS USD 21041334.720000 0.0671350834 Long EP CORP US Y 3 N N N N/A N/A TC2K5K6F9 252883.000000 NS USD 22094387.710000 0.0704949843 Long EP CORP US Y 3 N N N N/A N/A 000000000 96442.000000 NS USD 8426137.540000 0.0268846750 Long EP CORP US Y 3 N N N N/A N/A 000000000 921478.000000 NS USD 18018396.520000 0.0574900105 Long EP CORP US Y 3 N N N N/A N/A TC7AXBYR8 839788.000000 NS USD 3434732.920000 0.0109589569 Long EP CORP US Y 3 N N N 2024-11-08 T. ROWE PRICE MID-CAP GROWTH FUND, INC. /s/ Alan Dupski Alan Dupski Treasurer & Vice President XXXX