Institutional Manager · CIK 0001163744
Conestoga Capital Advisors, LLC
WAYNE, PA · File #028-10029
Latest AUM
$5.94B
Positions
121
Top-10 Concentration
36.4%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
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 | TREX CO INC | 89531P105 | -1,894,949 | -$97.9M | $0 |
| REDUCE | SPS COMM INC | SPSC | -638,707 | -$56.9M | -$19.2M |
| NEW | KARMAN HLDGS INC | KRMN | +534,897 | +$39.1M | $0 |
| EXITED | MESA LABS INC | 59064R109 | -426,457 | -$28.6M | $0 |
| NEW | BADGER METER INC | BMI | +130,393 | +$22.7M | $0 |
| ADD | BRIGHT HORIZONS FAM SOL IN D | 109194100 | +220,223 | +$22.3M | -$6.3M |
| REDUCE | DIGI INTL INC | 253798102 | -459,941 | -$19.9M | +$23.3M |
| REDUCE | ESCO TECHNOLOGIES INC | ESE | -97,623 | -$19.1M | -$13.7M |
| REDUCE | RBC BEARINGS INC | RBC | -41,533 | -$18.6M | +$36.4M |
| ADD | REPLIGEN CORP | RGEN | +101,062 | +$16.6M | +$28.9M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025121 pos · $5.94B
- 13F HOLDINGS REPORTQ/E Sep 2025122 pos · $6.23B
- 13F HOLDINGS REPORTQ/E Jun 2025122 pos · $6.77B
- 13F HOLDINGS REPORTQ/E Mar 2025123 pos · $6.63B
- 13F HOLDINGS REPORTQ/E Dec 2024124 pos · $7.55B
- 13F HOLDINGS REPORTQ/E Sep 2024121 pos · $7.37B
- 13F HOLDINGS REPORTQ/E Jun 2024130 pos · $6.67B
- 13F HOLDINGS REPORTQ/E Mar 2024131 pos · $6.92B
- 13F HOLDINGS REPORTQ/E Dec 2023128 pos · $5.82B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | CASELLA WASTE SYS INC | CWST | 2,777,327 | $272.0M | 4.82% |
| 2 | RBC BEARINGS INC | RBC | 584,410 | $262.1M | 4.64% |
| 3 | DESCARTES SYS GROUP INC | 249906108 | 2,508,569 | $219.9M | 3.89% |
| 4 | CONSTRUCTION PARTNERS INC | ROAD | 2,025,002 | $219.8M | 3.89% |
| 5 | CSW INDUSTRIALS INC | CSW | 633,255 | $185.9M | 3.29% |
| 6 | BALCHEM CORP | BCPC | 1,204,319 | $184.7M | 3.27% |
| 7 | MERIT MED SYS INC | 589889104 | 2,086,483 | $183.9M | 3.26% |
| 8 | FIRSTSERVICE CORP NEW | FSV | 1,172,521 | $182.4M | 3.23% |
| 9 | NOVANTA INC | NOVTU | 1,458,259 | $173.5M | 3.07% |
| 10 | REPLIGEN CORP | RGEN | 1,057,975 | $173.4M | 3.07% |
| 11 | EXPONENT INC | EXPO | 2,392,499 | $166.2M | 2.94% |
| 12 | MERCURY SYS INC | MRCY | 2,174,807 | $158.8M | 2.81% |
| 13 | STEVANATO GROUP S P A | STVN | 7,889,701 | $158.7M | 2.81% |
| 14 | SPX TECHNOLOGIES INC | SPXC | 758,400 | $151.7M | 2.69% |
| 15 | ESCO TECHNOLOGIES INC | ESE | 775,596 | $151.5M | 2.68% |
| 16 | CLEARWATER ANALYTICS HLDGS I | CWAN | 6,097,771 | $147.1M | 2.60% |
| 17 | SIMPSON MFG INC | 829073105 | 849,350 | $137.1M | 2.43% |
| 18 | AAON INC | AAON | 1,776,013 | $135.4M | 2.40% |
| 19 | SITEONE LANDSCAPE SUPPLY INC | SITE | 1,075,017 | $133.9M | 2.37% |
| 20 | Q2 HLDGS INC | QTWO | 1,847,501 | $133.3M | 2.36% |