Institutional Manager · CIK 0001760145
Costello Asset Management, INC
FEASTERVILLE, PA · File #028-19075
Latest AUM
$302.4M
Positions
691
Top-10 Concentration
62.6%
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 |
|---|---|---|---|---|---|
| ADD | NETFLIX INC | NFLX | +64,529 | +$6.1M | -$7.6M |
| EXITED | MARVELL TECHNOLOGY INC | 573874104 | -58,388 | -$4.9M | $0 |
| ADD | MCKESSON CORP | MCK | +5,144 | +$4.2M | +$5,730 |
| REDUCE | ESSENTIAL UTILS INC | 29670G102 | -79,049 | -$3.0M | -$151,033 |
| ADD | BOSTON SCIENTIFIC CORP | BSX | +16,230 | +$1.5M | -$95,174 |
| REDUCE | NVIDIA CORPORATION | NVDA | -8,248 | -$1.5M | -$10,651 |
| REDUCE | OWENS CORNING NEW | OC | -12,865 | -$1.4M | -$445,171 |
| REDUCE | ALPHABET INC | GOOG | -4,400 | -$1.4M | +$4.7M |
| ADD | VISA INC | V | +3,384 | +$1.2M | +$202,436 |
| REDUCE | ALPHABET INC | GOOG | -3,306 | -$1.0M | +$3.7M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025691 pos · $302.4M
- 13F HOLDINGS REPORTQ/E Sep 2025665 pos · $298.6M
- 13F HOLDINGS REPORTQ/E Jun 2025687 pos · $266.2M
- 13F HOLDINGS REPORTQ/E Mar 2025682 pos · $246.5M
- 13F HOLDINGS REPORTQ/E Dec 2024188 pos · $155.2M
- 13F HOLDINGS REPORTQ/E Sep 2024194 pos · $149.5M
- 13F HOLDINGS REPORTQ/E Jun 2024171 pos · $134.1M
- 13F HOLDINGS REPORTQ/E Mar 2024174 pos · $139.8M
- 13F HOLDINGS REPORTQ/E Dec 2023197 pos · $108.8M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | AMAZON COM INC | AMZN | 113,171 | $26.1M | 10.01% |
| 2 | APPLE INC | AAPL | 89,958 | $24.5M | 9.37% |
| 3 | NVIDIA CORPORATION | NVDA | 124,936 | $23.3M | 8.93% |
| 4 | ALPHABET INC | GOOG | 62,241 | $19.5M | 7.47% |
| 5 | MICROSOFT CORP | MSFT | 39,724 | $19.2M | 7.36% |
| 6 | ALPHABET INC | GOOG | 49,134 | $15.4M | 5.91% |
| 7 | ELI LILLY & CO | LLY | 8,643 | $9.3M | 3.56% |
| 8 | JOHNSON & JOHNSON | JNJ | 43,524 | $9.0M | 3.45% |
| 9 | VISA INC | V | 25,088 | $8.8M | 3.37% |
| 10 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 16,219 | $8.2M | 3.12% |
| 11 | NETFLIX INC | NFLX | 71,426 | $6.7M | 2.57% |
| 12 | BOSTON SCIENTIFIC CORP | BSX | 57,973 | $5.5M | 2.12% |
| 13 | CONSTELLATION ENERGY CORP | CEG | 15,324 | $5.4M | 2.07% |
| 14 | UBER TECHNOLOGIES INC | UBER | 65,207 | $5.3M | 2.04% |
| 15 | QXO INC | QXO-PB | 233,380 | $4.5M | 1.73% |
| 16 | ARTESIAN RES CORP | ARTNB | 139,988 | $4.4M | 1.70% |
| 17 | MCKESSON CORP | MCK | 5,264 | $4.3M | 1.65% |
| 18 | INVESCO EXCHANGE TRADED FD T | IVZ | 21,817 | $4.2M | 1.60% |
| 19 | CHUBB LIMITED | CB | 12,982 | $4.1M | 1.55% |
| 20 | CSX CORP | CSX | 93,867 | $3.4M | 1.30% |