Institutional Manager · CIK 0001639666
ISTHMUS PARTNERS, LLC
Madison, WI · File #028-16855
Latest AUM
$900.5M
Positions
214
Top-10 Concentration
31.1%
Filings
10
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 | ULTA BEAUTY INC | 90384S303 | -29,187 | -$16.0M | $0 |
| ADD | VISA INC CLASS A | V | +43,543 | +$15.3M | +$15,534 |
| NEW | AUTOZONE INC | AZO | +4,419 | +$15.0M | $0 |
| NEW | KINSALE CAP GROUP INC | 49714p108 | +20,736 | +$8.1M | $0 |
| REDUCE | ALPHABET INC CLASS A | GOOG | -10,139 | -$3.2M | +$28.3M |
| NEW | CATERPILLAR INC | CAT | +5,152 | +$3.0M | $0 |
| NEW | UNIVERSAL TECHNICAL INSTITUTE | UTI | +88,751 | +$2.3M | $0 |
| ADD | PHOTRONICS INC | PLAB | +57,959 | +$1.9M | +$236,757 |
| ADD | BOOZ ALLEN HAMILTON HLDG CORP | BAH | +21,487 | +$1.8M | +$8.1M |
| NEW | CLIMB GLOBAL SOLUTIONS INC | CLMB | +17,631 | +$1.8M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025214 pos · $900.5M
- 13F HOLDINGS REPORTQ/E Sep 2025176 pos · $450.8M
- 13F HOLDINGS REPORTQ/E Jun 2025217 pos · $856.1M
- 13F HOLDINGS REPORTQ/E Mar 2025212 pos · $798.8M
- 13F HOLDINGS REPORTQ/E Dec 2024217 pos · $822.7M
- 13F HOLDINGS REPORTQ/E Sep 2024195 pos · $841.7M
- 13F HOLDINGS REPORT (Amended)Q/E Jun 2024196 pos · $849.2M
- 13F HOLDINGS REPORTQ/E Jun 2024225 pos · $1.56B
- 13F HOLDINGS REPORTQ/E Mar 2024197 pos · $881.0M
- 13F HOLDINGS REPORTQ/E Dec 2023168 pos · $693.2M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | APPLE INC | AAPL | 94,073 | $25.6M | 3.83% |
| 2 | ALPHABET INC CLASS A | GOOG | 80,501 | $25.2M | 3.77% |
| 3 | MICROSOFT CORP | MSFT | 46,724 | $22.6M | 3.38% |
| 4 | CH ROBINSON WORLDWIDE INC | CHRW | 127,562 | $20.5M | 3.07% |
| 5 | JOHNSON & JOHNSON | JNJ | 97,957 | $20.3M | 3.03% |
| 6 | BROADCOM INC | AVGO | 57,829 | $20.0M | 2.99% |
| 7 | CENCORA INC | COR | 56,787 | $19.2M | 2.87% |
| 8 | BANK NEW YORK MELLON CORP | 064058100 | 163,819 | $19.0M | 2.84% |
| 9 | APPLIED MATERIALS | 038222105 | 71,954 | $18.5M | 2.77% |
| 10 | HCA HOLDINGS INC | HCA | 36,069 | $16.8M | 2.52% |
| 11 | TRANE TECHNOLOGIES PLC | TT | 42,869 | $16.7M | 2.50% |
| 12 | AMCOR PLC F | AMCCF | 1,933,404 | $16.1M | 2.41% |
| 13 | VISA INC CLASS A | V | 45,208 | $15.9M | 2.37% |
| 14 | ROCKWELL AUTOMATION INC | ROK | 40,574 | $15.8M | 2.36% |
| 15 | CBOE GLOBAL MKTS INC | 12503m108 | 61,367 | $15.4M | 2.30% |
| 16 | PNC FINL SVCS GROUP INC | 693475105 | 73,251 | $15.3M | 2.29% |
| 17 | AUTOZONE INC | AZO | 4,419 | $15.0M | 2.24% |
| 18 | ALLISON TRANSMISSION HLDGS INC | ALSN | 151,215 | $14.8M | 2.21% |
| 19 | ABBVIE INC | ABBV | 64,740 | $14.8M | 2.21% |
| 20 | BERKLEY W R CORP | WRB-PH | 208,728 | $14.6M | 2.19% |