Institutional Manager · CIK 0001831133
Montanaro Asset Management Ltd
LONDON, X0 · File #028-20840
Latest AUM
$400.4M
Positions
41
Top-10 Concentration
48.5%
Filings
8
Portfolio Value Over Time
2023-12
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| EXITED | ANSYS INC | 03662Q105 | -32,900 | -$11.6M | $0 |
| NEW | EASTGROUP PPTYS INC | 277276101 | +37,000 | +$6.3M | $0 |
| ADD | MANHATTAN ASSOCIATES INC | 562750109 | +21,100 | +$4.3M | +$533,661 |
| NEW | MIRION TECHNOLOGIES INC | 60471A101 | +171,600 | +$4.0M | $0 |
| ADD | BIO-TECHNE CORP | 09073M104 | +67,100 | +$3.7M | +$1.2M |
| REDUCE | SITIME CORP | 82982T106 | -10,000 | -$3.0M | +$4.0M |
| REDUCE | BRUKER CORP | 116794108 | -90,100 | -$2.9M | -$2.7M |
| NEW | DOXIMITY INC | 26622P107 | +32,200 | +$2.4M | $0 |
| REDUCE | COGNEX CORP | 192422103 | -43,900 | -$2.0M | +$1.5M |
| ADD | ROLLINS INC | 775711104 | +32,000 | +$1.9M | +$614,800 |
Filing History
- 13F HOLDINGS REPORTQ/E Sep 202541 pos · $400.4M
- 13F HOLDINGS REPORTQ/E Jun 202539 pos · $387.9M
- 13F HOLDINGS REPORTQ/E Mar 202546 pos · $340.9M
- 13F HOLDINGS REPORTQ/E Dec 202447 pos · $484.4M
- 13F HOLDINGS REPORTQ/E Sep 202447 pos · $561.1M
- 13F HOLDINGS REPORTQ/E Jun 202446 pos · $536.4M
- 13F HOLDINGS REPORTQ/E Mar 202444 pos · $553.7M
- 13F HOLDINGS REPORTQ/E Dec 202345 pos · $568.5M
Top 20 Holdings — Sep 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | BENTLEY SYS INC | 08265T208 | 460,900 | $23.7M | 5.93% |
| 2 | NOVA LTD | M7516K103 | 73,680 | $23.6M | 5.88% |
| 3 | TYLER TECHNOLOGIES INC | 902252105 | 40,575 | $21.2M | 5.30% |
| 4 | BIO-TECHNE CORP | 09073M104 | 362,050 | $20.1M | 5.03% |
| 5 | STRIDE INC | 86333M108 | 132,200 | $19.7M | 4.92% |
| 6 | MANHATTAN ASSOCIATES INC | 562750109 | 92,160 | $18.9M | 4.72% |
| 7 | HOULIHAN LOKEY INC | 441593100 | 89,000 | $18.3M | 4.56% |
| 8 | ROLLINS INC | 775711104 | 297,000 | $17.4M | 4.36% |
| 9 | TREX CO INC | 89531P105 | 322,462 | $16.7M | 4.16% |
| 10 | TRANSMEDICS GROUP INC | 89377M109 | 130,586 | $14.7M | 3.66% |
| 11 | AMERICAN WTR WKS CO INC NEW | 030420103 | 97,540 | $13.6M | 3.39% |
| 12 | PAYCOM SOFTWARE INC | 70432V102 | 63,500 | $13.2M | 3.30% |
| 13 | FABRINET | G3323L100 | 33,000 | $12.0M | 3.01% |
| 14 | VEEVA SYS INC | 922475108 | 40,200 | $12.0M | 2.99% |
| 15 | BALCHEM CORP | 057665200 | 78,700 | $11.8M | 2.95% |
| 16 | HAWKINS INC | 420261109 | 59,100 | $10.8M | 2.70% |
| 17 | SITIME CORP | 82982T106 | 35,000 | $10.5M | 2.63% |
| 18 | CSW INDUSTRIALS INC | 126402106 | 40,000 | $9.7M | 2.42% |
| 19 | ALARM COM HLDGS INC | 011642105 | 164,300 | $8.7M | 2.18% |
| 20 | EXPONENT INC | 30214U102 | 121,600 | $8.4M | 2.11% |