Institutional Manager · CIK 0001096978
MARINER INVESTMENT GROUP LLC
Harrison, NY · File #028-11231
Latest AUM
$1.71B
Positions
111
Top-10 Concentration
64.6%
Filings
8
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 |
|---|---|---|---|---|---|
| NEW | MICROSOFT CORP | MSFT | +344,000 | +$166.4M | $0 |
| NEW | LAM RESEARCH CORP | LRCX | +736,000 | +$126.0M | $0 |
| NEW | ALPHABET INC | GOOG | +350,000 | +$109.8M | $0 |
| NEW | COSTCO WHSL CORP NEW | 22160K105 | +125,000 | +$107.8M | $0 |
| NEW | CISCO SYS INC | CSCO | +1,372,000 | +$105.7M | $0 |
| NEW | ASML HOLDING N V | ASMLF | +93,000 | +$99.5M | $0 |
| NEW | TEXAS INSTRS INC | 882508104 | +559,000 | +$97.0M | $0 |
| NEW | LINDE PLC | LIN | +200,000 | +$85.3M | $0 |
| NEW | INTEL CORP | INTC | +2,200,000 | +$81.2M | $0 |
| NEW | HONEYWELL INTL INC | 438516106 | +392,000 | +$76.5M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 2025111 pos · $1.71B
- 13F HOLDINGS REPORTQ/E Sep 202576 pos · $330.6M
- 13F HOLDINGS REPORTQ/E Jun 202566 pos · $281.7M
- 13F HOLDINGS REPORTQ/E Mar 202536 pos · $254.2M
- 13F HOLDINGS REPORTQ/E Dec 202446 pos · $504.6M
- 13F HOLDINGS REPORTQ/E Sep 202431 pos · $371.3M
- 13F HOLDINGS REPORTQ/E Jun 202422 pos · $462.9M
- 13F HOLDINGS REPORTQ/E Mar 202428 pos · $321.9M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | MICROSOFT CORP | MSFT | 344,000 | $166.4M | 9.79% |
| 2 | LAM RESEARCH CORP | LRCX | 736,000 | $126.0M | 7.42% |
| 3 | ALPHABET INC | GOOG | 350,000 | $109.8M | 6.47% |
| 4 | COSTCO WHSL CORP NEW | 22160K105 | 125,000 | $107.8M | 6.35% |
| 5 | ISHARES BITCOIN TRUST ETF | IBIT | 2,146,536 | $106.6M | 6.27% |
| 6 | CISCO SYS INC | CSCO | 1,372,000 | $105.7M | 6.22% |
| 7 | ASML HOLDING N V | ASMLF | 93,000 | $99.5M | 5.86% |
| 8 | TEXAS INSTRS INC | 882508104 | 559,000 | $97.0M | 5.71% |
| 9 | NVIDIA CORPORATION | NVDA | 497,000 | $92.7M | 5.46% |
| 10 | LINDE PLC | LIN | 200,000 | $85.3M | 5.02% |
| 11 | INTEL CORP | INTC | 2,200,000 | $81.2M | 4.78% |
| 12 | HONEYWELL INTL INC | 438516106 | 392,000 | $76.5M | 4.50% |
| 13 | APPLE INC | AAPL | 248,000 | $67.4M | 3.97% |
| 14 | MASTERCARD INCORPORATED | MA | 100,000 | $57.1M | 3.36% |
| 15 | CINTAS CORP | CTAS | 269,000 | $50.6M | 2.98% |
| 16 | MCDONALDS CORP | MCD | 163,000 | $49.8M | 2.93% |
| 17 | LOWES COS INC | 548661107 | 101,000 | $24.4M | 1.43% |
| 18 | ALIBABA GROUP HLDG LTD | BBAAY | 15,000,000 | $23.3M | 1.37% |
| 19 | FORD MTR CO | 345370CZ1 | 20,000,000 | $20.8M | 1.23% |
| 20 | ISHARES TR | 464289511 | 400,000 | $20.2M | 1.19% |