NPORT-P false 0000898031 XXXXXXXX S000007142 C000019535 C000019536 C000221454 C000221457 LORD ABBETT SECURITIES TRUST 811-07538 0000898031 5493002HV0D15KTWO412 30 HUDSON STREET JERSEY CITY 07302 201-827-2000 Lord Abbett Micro-Cap Growth Fund S000007142 549300VL8AMXUES9JL76 2026-10-31 2026-07-31 N 218079036.13 5072253.21 213006782.92 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 UST AAR Corp MP76T5YQX3YK5VVAQ802 000361105 23271.00000000 NS USD 3258870.84000000 1.529937589463 Long EC CORP US N 1 N N N Adaptive Biotechnologies Corp 549300ZTF7OT1FW66Q96 00650F109 247344.00000000 NS USD 5582554.08000000 2.620833948793 Long EC CORP US N 1 N N N Aehr Test Systems 529900A4GWWZFRU2RE97 00760J108 69289.00000000 NS USD 5541734.22000000 2.601670305532 Long EC CORP US N 1 N N N Jade Biosciences Inc N/A 008064206 125717.00000000 NS USD 2482910.75000000 1.165648678395 Long EC CORP US N 1 N N N Agilysys Inc 5299001XWB5V3B5IPN93 00847J105 20883.00000000 NS USD 2196056.28000000 1.030979506800 Long EC CORP US N 1 N N N Alamar Biosciences Inc N/A 010911105 67817.00000000 NS USD 1719839.12000000 0.807410494831 Long EC CORP US N 1 N N N Ambiq Micro Inc 529900H4UP6I4UMDAA87 023193105 33096.00000000 NS USD 2104574.64000000 0.988031747698 Long EC CORP US N 1 N N N American Public Education Inc 254900GZNX6TJQGM4S17 02913V103 33105.00000000 NS USD 1605923.55000000 0.753930709616 Long EC CORP US N 1 N N N Applied Aerospace & Defense Inc N/A 03815J107 54761.00000000 NS USD 1024030.70000000 0.480750277508 Long EC CORP US N 1 N N N Applied Digital Corp 2549004NE2B6RYXINZ02 038169207 54140.00000000 NS USD 1482894.60000000 0.696172478487 Long EC CORP US N 1 N N Applied Optoelectronics Inc 529900I8U6Q5SYDNLT48 03823U102 11770.00000000 NS USD 1110146.40000000 0.521178896174 Long EC CORP US N 1 N N N Argan Inc 529900E4KZWBV9KGBS83 04010E109 2544.00000000 NS USD 1451173.92000000 0.681280614685 Long EC CORP US N 1 N N N Bel Fuse Inc 2549009L4XYDBRRY6X39 077347300 13923.00000000 NS USD 3786638.31000000 1.777707854224 Long EC CORP US N 1 N N N Billiontoone Inc N/A 090168105 23434.00000000 NS USD 3247952.40000000 1.524811724526 Long EC CORP US N 1 N N N BlackSky Technology Inc N/A 09263B207 72793.00000000 NS USD 1677878.65000000 0.787711370970 Long EC CORP US N 1 N N CECO Environmental Corp 5493002CZCTL4HGLIY91 125141101 64212.00000000 NS USD 4230928.68000000 1.986288240214 Long EC CORP US N 1 N N N Cardinal Infrastructure Group Inc N/A 14154A102 60087.00000000 NS USD 3718784.43000000 1.745852586955 Long EC CORP US N 1 N N N Celcuity Inc 25490070W7UU7W2SEY87 15102K100 27293.00000000 NS USD 2357569.34000000 1.106804819865 Long EC CORP US N 1 N N N CG oncology Inc N/A 156944100 21060.00000000 NS USD 1499261.40000000 0.703856177464 Long EC CORP US N 1 N N N Chefs' Warehouse Inc/The 549300JYEDC8C547E980 163086101 32950.00000000 NS USD 3800782.50000000 1.784348107556 Long EC CORP US N 1 N N N Citi Trends Inc 529900D06Q0FPHV34S87 17306X102 29630.00000000 NS USD 1975432.10000000 0.927403377920 Long EC CORP US N 1 N N N Cleanspark Inc 254900VO7KBRJQDGY810 18452B209 82713.00000000 NS USD 1138130.88000000 0.534316731325 Long EC CORP US N 1 N N Cogent Biosciences Inc N/A 19240Q201 150222.00000000 NS USD 5848142.46000000 2.745519358506 Long EC CORP US N 1 N N N Dave Inc 25490061SUVXCW51RZ82 23834J201 4988.00000000 NS USD 1858977.72000000 0.872731701083 Long EC CORP US N 1 N N N Dianthus Therapeutics Inc 549300Z3N6ODPCOFC890 252828108 25441.00000000 NS USD 2720151.72000000 1.277025868712 Long EC CORP US N 1 N N N Enliven Therapeutics Inc N/A 29337E102 90937.00000000 NS USD 4984256.97000000 2.339952231414 Long EC CORP US N 1 N N N Extreme Networks Inc 549300WRECW11X94UB57 30226D106 41935.00000000 NS USD 1263920.90000000 0.593371198171 Long EC CORP US N 1 N N N Fastly Inc 549300E2FZC83FJ3H565 31188V100 99749.00000000 NS USD 2260312.34000000 1.061145710486 Long EC CORP US N 1 N N N Fidelity Investments E57ODZWZ7FF32TWEFA76 31607A703 4319833.28000000 NS USD 4319833.28000000 2.028026159909 Long STIV RF US N 1 N N Forte Biosciences Inc 529900Z84WFDHPS3JP76 34962G208 73673.00000000 NS USD 5643351.80000000 2.649376570378 Long EC CORP US N 1 N N N Forum Energy Technologies Inc 549300SF93HLCR1REE27 34984V209 40182.00000000 NS USD 2518205.94000000 1.182218662466 Long EC CORP US N 1 N N N HeartFlow Inc N/A 42238D107 32888.00000000 NS USD 829764.24000000 0.389548271010 Long EC CORP US N 1 N N N Helios Technologies Inc 5493000BCJSMIDRNTI78 42328H109 19921.00000000 NS USD 1552045.11000000 0.728636472850 Long EC CORP US N 1 N N N Hinge Health Inc N/A 433313103 51295.00000000 NS USD 3832249.45000000 1.799120853085 Long EC CORP US N 1 N N N IMAX Corp 894500GS1ESLAPZCEI74 45245E109 80694.00000000 NS USD 3860400.96000000 1.812337103579 Long EC CORP CA N 1 N N N Innodata Inc L9O7MPYIT56T6KBE0R95 457642205 21683.00000000 NS USD 1362342.89000000 0.639577233797 Long EC CORP US N 1 N N N Legence Corp 529900LFX8I46NGWUO67 52476L109 35976.00000000 NS USD 2299945.68000000 1.079752319842 Long EC CORP US N 1 N N N Liftoff Mobile Inc 549300TP5NEG85CHPU59 53229X101 22454.00000000 NS USD 498478.80000000 0.234020153333 Long EC CORP US N 1 N N N Lincoln Educational Services Corp 549300BJ55KUY6RG7L98 533535100 81155.00000000 NS USD 3393902.10000000 1.593330528481 Long EC CORP US N 1 N N N Lindblad Expeditions Holdings Inc 549300GSPW24GZE6R597 535219109 152684.00000000 NS USD 4516392.72000000 2.120304648559 Long EC CORP US N 1 N N N MYR Group Inc 529900G1IMMZHOQ17I54 55405W104 6460.00000000 NS USD 2152601.20000000 1.010578710448 Long EC CORP US N 1 N N N Sphere Entertainment Co 254900ZW4JWKYRZZ9A91 55826T102 20381.00000000 NS USD 2919578.25000000 1.370650366141 Long EC CORP US N 1 N N N Mama's Creations Inc N/A 56146T103 197040.00000000 NS USD 3631447.20000000 1.704850498288 Long EC CORP US N 1 N N N Mayville Engineering Co Inc 9845008D43E42A7FC362 578605107 42094.00000000 NS USD 1080552.98000000 0.507285714185 Long EC CORP US N 1 N N N Mercury Systems Inc 549300P3B84SGK7HH679 589378108 22872.00000000 NS USD 2220871.20000000 1.042629332998 Long EC CORP US N 1 N N N Miami International Holdings Inc 254900TREUDBWGLAP788 59356Q108 59920.00000000 NS USD 2818636.80000000 1.323261523112 Long EC CORP US N 1 N N N Mirum Pharmaceuticals Inc 254900YZKR40F7F27K81 604749101 25930.00000000 NS USD 2747283.50000000 1.289763387972 Long EC CORP US N 1 N N N Navan Inc 254900RHRK35UPHTGY05 639193101 203265.00000000 NS USD 5410914.30000000 2.540254458484 Long EC CORP US N 1 N N N Navitas Semiconductor Corp 529900T4K9WALWC76S49 63942X106 212162.00000000 NS USD 2304079.32000000 1.081692934100 Long EC CORP US N 1 N N N Nektar Therapeutics 5299005I24806IOIYE03 640268306 33756.00000000 NS USD 2385536.52000000 1.119934533209 Long EC CORP US N 1 N N N Neptune Insurance Holdings Inc 529900I3QTHC0Q1C2D65 64073B103 89928.00000000 NS USD 2851616.88000000 1.338744635691 Long EC CORP US N 1 N N N Ooma Inc N/A 683416101 78211.00000000 NS USD 1701089.25000000 0.798608019275 Long EC CORP US N 1 N N N Oruka Therapeutics Inc 529900TG7O4ESUDMGI54 687604108 25176.00000000 NS USD 2429735.76000000 1.140684689328 Long EC CORP US N 1 N N N Ouster Inc N/A 68989M202 56605.00000000 NS USD 2208161.05000000 1.036662316443 Long EC CORP US N 1 N N N PTC Therapeutics Inc 549300UJLWOIWFDGB318 69366J200 34208.00000000 NS USD 2326486.08000000 1.092212204751 Long EC CORP US N 1 N N N Pattern Group Inc 549300G1UQH42SPEGM03 70339W104 172345.00000000 NS USD 3967381.90000000 1.862561297632 Long EC CORP US N 1 N N N Penguin Solutions Inc 254900DVWIPOY3GJ8E23 706915105 35003.00000000 NS USD 1842207.89000000 0.864858792169 Long EC CORP US N 1 N N N Praxis Precision Medicines Inc N/A 74006W207 8017.00000000 NS USD 2467873.11000000 1.158588978326 Long EC CORP US N 1 N N N Rapport Therapeutics Inc N/A 75383L102 40650.00000000 NS USD 1665837.00000000 0.782058194187 Long EC CORP US N 1 N N N Red Violet Inc 549300T4EGADG881UU63 75704L104 47864.00000000 NS USD 3320804.32000000 1.559013414726 Long EC CORP US N 1 N N N Relay Therapeutics Inc N/A 75943R102 109963.00000000 NS USD 2070603.29000000 0.972083264962 Long EC CORP US N 1 N N N SharonAI Holdings Inc 529900B1KAZH4TJD6T41 778920306 21367.00000000 NS USD 1030957.75000000 0.484002310098 Long EC CORP US N 1 N N Sezzle Inc 9845000CA64541AE3I35 78435P105 8968.00000000 NS USD 1387798.00000000 0.651527609109 Long EC CORP US N 1 N N N Standex International Corp RCX52GR0JW2LRRMH9Z54 854231107 5584.00000000 NS USD 1655656.00000000 0.777278534187 Long EC CORP US N 1 N N N Fixed Income Clearing Corp. 549300H47WTHXPU08X20 000000000 4421923.50000000 PA USD 4421923.50000000 2.075954314403 Long RA CORP US N 2 Repurchase N 3.25000000 2026-08-03 4682000.00000000 USD 4510361.97000000 USD UST N N N StoneX Group Inc 549300JUF07L8VF02M60 861896108 20298.00000000 NS USD 1554217.86000000 0.729656510789 Long EC CORP US N 1 N N N 10X Genomics Inc 5493003Z6741WNLG7H43 88025U109 89105.00000000 NS USD 4211993.35000000 1.977398697008 Long EC CORP US N 1 N N N Terawulf Inc 254900CVMW1SX2T78A64 88080T104 86433.00000000 NS USD 1526406.78000000 0.716600081497 Long EC CORP US N 1 N N Transcat Inc 54930081E40TSSHUOS40 893529107 31472.00000000 NS USD 2686764.64000000 1.261351682405 Long EC CORP US N 1 N N N Twist Bioscience Corp 549300T23BL59LCOH584 90184D100 22572.00000000 NS USD 2066466.60000000 0.970141218824 Long EC CORP US N 1 N N N Tyra Biosciences Inc N/A 90240B106 51783.00000000 NS USD 1650842.04000000 0.775018531038 Long EC CORP US N 1 N N N Universal Technical Institute Inc 2549003YOJGAZ0PVFV48 913915104 66965.00000000 NS USD 2632394.15000000 1.235826443606 Long EC CORP US N 1 N N N Unusual Machines Inc /US N/A 91532F102 71125.00000000 NS USD 1505005.00000000 0.706552617418 Long EC CORP US N 1 N N VSE Corp 549300QWJYQDH4U5XI15 918284100 11372.00000000 NS USD 2210603.08000000 1.037808772892 Long EC CORP US N 1 N N N Vishay Precision Group Inc N/A 92835K103 8776.00000000 NS USD 807830.80000000 0.379251209245 Long EC CORP US N 1 N N N Vita Coco Co Inc/The 54930020WXOAWHR85Y25 92846Q107 42477.00000000 NS USD 2800933.38000000 1.314950322991 Long EC CORP US N 1 N N N Warby Parker Inc N/A 93403J106 53368.00000000 NS USD 1424391.92000000 0.668707306158 Long EC CORP US N 1 N N N Willdan Group Inc 529900YQO0LF5VAEKN05 96924N100 27362.00000000 NS USD 1875117.86000000 0.880308990303 Long EC CORP US N 1 N N N WisdomTree Inc 549300WIU8IS7UFO7871 97717P104 138762.00000000 NS USD 2687819.94000000 1.261847112638 Long EC CORP US N 1 N N N Xometry Inc 5493006JFRGU7YRRXE44 98423F109 45580.00000000 NS USD 3907117.60000000 1.834269099997 Long EC CORP US N 1 N N N Marex Group Ltd 254900V928MQRIAF8X79 000000000 37980.00000000 NS USD 2465661.60000000 1.157550743783 Long EC CORP BM N 1 N N N Gilat Satellite Networks Ltd 529900RVHDCYJ5YWHP12 000000000 111111.00000000 NS USD 1227776.55000000 0.576402560129 Long EC CORP IL N 1 N N N TAT Technologies Ltd N/A 000000000 68712.00000000 NS USD 2672896.80000000 1.254841166726 Long EC CORP IL N 1 N N N Newamsterdam Pharma Co NV 984500B6549TF6E14D36 000000000 65889.00000000 NS USD 1831055.31000000 0.859623005849 Long EC CORP NL N 1 N N N uniQure NV 724500RPCTZLFYJZ3S98 000000000 51240.00000000 NS USD 2235601.20000000 1.049544605741 Long EC CORP NL N 1 N N N Citibank NA E57ODZWZ7FF32TWEFA76 000000000 479981.47000000 NS USD 479981.47000000 0.225336237381 Long STIV RF US N 1 N N 2026-08-28 LORD ABBETT SECURITIES TRUST Gina Andes Gina Andes Interim Principal Financial Officer XXXX