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Montanaro Asset Management Ltd

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13F filer, CIK 1831133, LONDON, United Kingdom

Montanaro Asset Management Ltd reported $340,900,732 across 46 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-13. Its ten largest share positions make up 44.47% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001085146-25-003010

Period
2025-03-31
Reported value
$341M
Holdings
46
Top 10 weight
44.47%
New
2
Sold out
3

Largest buys vs the previous quarter

SecurityShares changeApprox. value
FSSnew+18,400$1.35M
HQYnew+15,300$1.35M
TMDXadded+13,640$918K
BRBRadded+10,000$745K
TWadded+4,000$594K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
IEXexited-45,000-$9.42M
AWKreduced-51,200-$7.55M
POWIreduced-144,654-$7.31M
ICLRexited-31,700-$6.65M
TYLreduced-10,899-$6.34M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2025

Share positions as resolved from 13F-HR 0001085146-25-003010, largest first. % of portfolio is the value over $340,900,732, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
TYLTYLER TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 59,960 shares; 2024Q4: 52,360 shares; 2025Q1: 41,461 shares 41,461$24.1M7.07%-10,899Timeline
LRNSTRIDE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 155,000 shares; 2024Q4: 183,500 shares; 2025Q1: 140,600 shares 140,600$17.8M5.22%-42,900Timeline
TREXTREX INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 322,300 shares; 2024Q4: 315,900 shares; 2025Q1: 292,800 shares 292,800$17M4.99%-23,100Timeline
TECHBIO-TECHNE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 323,000 shares; 2024Q4: 332,500 shares; 2025Q1: 256,600 shares 256,600$15M4.41%-75,900Timeline
ROLROLLINS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 248,000 shares; 2024Q4: 256,000 shares; 2025Q1: 260,000 shares 260,000$14M4.12%+4,000Timeline
BRKRBRUKER CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 446,500 shares; 2024Q4: 426,950 shares; 2025Q1: 318,700 shares 318,700$13.3M3.9%-108,250Timeline
AWKAMERICAN WTR WKS CO INC NEWQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 169,900 shares; 2024Q4: 138,500 shares; 2025Q1: 87,300 shares 87,300$12.9M3.78%-51,200Timeline
HLIHOULIHAN LOKEY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 151,000 shares; 2024Q4: 95,000 shares; 2025Q1: 79,500 shares 79,500$12.8M3.77%-15,500Timeline
BCPCBALCHEM CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 127,800 shares; 2024Q4: 107,500 shares; 2025Q1: 74,900 shares 74,900$12.4M3.65%-32,600Timeline
BSYBENTLEY SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 331,416 shares; 2024Q4: 373,216 shares; 2025Q1: 309,239 shares 309,239$12.2M3.57%-63,977Timeline
NVMINOVA LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 110,358 shares; 2024Q4: 75,958 shares; 2025Q1: 64,125 shares 64,125$11.8M3.47%-11,833Timeline
ANSYS INCANSYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 64,300 shares; 2024Q4: 45,250 shares; 2025Q1: 34,206 shares 34,206$10.8M3.18%-11,044
MANHMANHATTAN ASSOCIATES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 26,600 shares; 2024Q4: 76,940 shares; 2025Q1: 61,920 shares 61,920$10.7M3.14%-15,020Timeline
TMDXTRANSMEDICS GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 117,235 shares; 2024Q4: 140,035 shares; 2025Q1: 153,675 shares 153,675$10.3M3.03%+13,640Timeline
CSWCSW INDUSTRIALS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 45,000 shares; 2024Q4: 35,000 shares; 2025Q1: 35,000 shares 35,000$10.2M2.99%0Timeline
EXPOEXPONENT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 179,500 shares; 2024Q4: 168,300 shares; 2025Q1: 124,200 shares 124,200$10.1M2.95%-44,100Timeline
ALRMALARM COM HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 223,900 shares; 2024Q4: 238,300 shares; 2025Q1: 174,790 shares 174,790$9.73M2.85%-63,510Timeline
VEEVVEEVA SYS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 80,250 shares; 2024Q4: 62,150 shares; 2025Q1: 40,230 shares 40,230$9.32M2.73%-21,920Timeline
BRBRBELLRING BRANDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 100,000 shares; 2025Q1: 110,000 shares 110,000$8.19M2.4%+10,000Timeline
GGGGRACO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 90,000 shares; 2025Q1: 90,000 shares 90,000$7.52M2.2%0Timeline
FCNFTI CONSULTING INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 30,000 shares; 2024Q4: 45,000 shares; 2025Q1: 45,000 shares 45,000$7.38M2.17%0Timeline
SITMSITIME CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 46,025 shares; 2024Q4: 45,880 shares; 2025Q1: 45,659 shares 45,659$6.98M2.05%-221Timeline
TWTRADEWEB MKTS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 39,000 shares; 2024Q4: 43,000 shares; 2025Q1: 47,000 shares 47,000$6.98M2.05%+4,000Timeline
MSCIMSCI INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 18,600 shares; 2024Q4: 17,000 shares; 2025Q1: 12,000 shares 12,000$6.79M1.99%-5,000Timeline
FNFABRINETQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 41,250 shares; 2024Q4: 34,020 shares; 2025Q1: 33,759 shares 33,759$6.67M1.96%-261Timeline
PCTYPAYLOCITY HLDG CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 35,000 shares; 2024Q4: 35,000 shares; 2025Q1: 35,000 shares 35,000$6.55M1.92%0Timeline
MASIMASIMO CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 55,700 shares; 2024Q4: 46,500 shares; 2025Q1: 32,300 shares 32,300$5.38M1.58%-14,200Timeline
ENTGENTEGRIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 110,221 shares; 2024Q4: 92,600 shares; 2025Q1: 55,580 shares 55,580$4.86M1.43%-37,020Timeline
CGNXCOGNEX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 282,400 shares; 2024Q4: 232,750 shares; 2025Q1: 140,202 shares 140,202$4.18M1.23%-92,548Timeline
WMSADVANCED DRAIN SYS INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 83,400 shares; 2024Q4: 67,700 shares; 2025Q1: 38,000 shares 38,000$4.13M1.21%-29,700Timeline
PAYCPAYCOM SOFTWARE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 14,925 shares; 2024Q4: 16,925 shares; 2025Q1: 18,835 shares 18,835$4.12M1.21%+1,910Timeline
BMIBADGER METER INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 68,050 shares; 2024Q4: 53,450 shares; 2025Q1: 20,500 shares 20,500$3.9M1.14%-32,950Timeline
STVNSTEVANATO GROUP S P AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 179,800 shares; 2024Q4: 179,800 shares; 2025Q1: 175,000 shares 175,000$3.57M1.05%-4,800Timeline
ERIIENERGY RECOVERY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 496,000 shares; 2024Q4: 422,400 shares; 2025Q1: 216,700 shares 216,700$3.44M1.01%-205,700Timeline
FORMFORMFACTOR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 114,291 shares; 2024Q4: 115,161 shares; 2025Q1: 114,501 shares 114,501$3.24M0.95%-660Timeline
TRNSTRANSCAT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 40,000 shares; 2024Q4: 40,000 shares; 2025Q1: 40,000 shares 40,000$2.98M0.87%0Timeline
POWIPOWER INTEGRATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 205,050 shares; 2024Q4: 189,654 shares; 2025Q1: 45,000 shares 45,000$2.27M0.67%-144,654Timeline
OLEDUNIVERSAL DISPLAY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 63,260 shares; 2024Q4: 38,260 shares; 2025Q1: 15,995 shares 15,995$2.23M0.65%-22,265Timeline
HWKNHAWKINS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 15,000 shares; 2025Q1: 15,000 shares 15,000$1.59M0.47%0Timeline
FSSFEDERAL SIGNAL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 18,400 shares 18,400$1.35M0.4%newTimeline
HQYHEALTHEQUITY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 15,300 shares 15,300$1.35M0.4%newTimeline
AXONAXON ENTERPRISE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 775 shares; 2024Q4: 700 shares; 2025Q1: 430 shares 430$226K0.07%-270Timeline
GLOBGLOBANT S AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,475 shares; 2024Q4: 1,475 shares; 2025Q1: 1,170 shares 1,170$138K0.04%-305Timeline
PEVERPURE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,050 shares; 2024Q4: 3,665 shares; 2025Q1: 2,570 shares 2,570$114K0.03%-1,095Timeline
ZSZSCALER INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 800 shares; 2024Q4: 800 shares; 2025Q1: 500 shares 500$99.2K0.03%-300Timeline
AEHRAEHR TEST SYSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 8,750 shares; 2024Q4: 4,850 shares; 2025Q1: 4,850 shares 4,850$35.4K0.01%0Timeline

Sold out in Q1 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
IEXIDEX CORP45,000$9.42Mshares
ICLRICON PUB LTD CO31,700$6.65Mshares
FOXFFOX FACTORY HLDG CORP55,000$1.66Mshares

How Q1 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001085146-25-003010 base2025-05-13acceptance time not in the bulk data set