SOUTHPORT MANAGEMENT, L.L.C. — 13F Holdings & Portfolio
CIK 1549553 · latest 13F-HR filed 2026-02-13
SOUTHPORT MANAGEMENT, L.L.C. manages $28.6M in 13F-reported U.S. long-equity assets across 29 reported positions as of its 2025-12-31 13F-HR filing. Its largest disclosed positions are HON (9.58%), CCJ (8.78%), AMLP (6.65%). Quarter over quarter (versus its 2025-09-30 filing) the fund opened 7 new positions and exited 5; 9 existing positions rose in reported value and 4 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-02-13
vs 2025-09-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q4 25Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q3 25 → Q4 25Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
2 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 59%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Jun 7, 2017.
SUITE 210
WILSON, WY 83014
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| DAWSON, JONATHAN, TYRRELL Control | MANAGING MEMBER since Jan 2012 | 75% or more | Individual |
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- EQT CORP$523.5K +64.1%
- ALPS ETF TR$472.9K +33.0%
- PROSHARES TR$459.8K +62.8%
- ASP ISOTOPES INC$166.2K +57.6%
- NAVIGATOR HLDGS LTD$123.5K +11.8%
Top Trims
- CHENIERE ENERGY INC-$696.6K -31.2%
- ENCORE ENERGY CORP-$164.2K -22.7%
- EMCOR GROUP INC-$56.6K -5.8%
- SKYLINE BLDRS GROUP HLDG LTD-$18.3K -14.0%
New Positions
- HONEYWELL INTL INC$2.7M
- PROSHARES TR$1.4M
- UNITED PARCEL SERVICE INC$743.9K
- SOLSTICE ADVANCED MATLS INC$626.7K
- KNIGHT-SWIFT TRANSN HLDGS IN$522.8K
Exited Positions
- PROSHARES TR$939.2K
- VANECK ETF TRUST$916.8K
- ISHARES INC$675.1K
- QXO INC$524.1K
- NEBIUS GROUP N.V.$168.4K
SOUTHPORT MANAGEMENT, L.L.C. Holdings (2025-12-31)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | HONEYWELL INTL INC | HON | 438516106 | $2.7M | 9.58% | 14,060 | SH |
| 2 | CAMECO CORP | CCJ | 13321L108 | $2.5M | 8.78% | 27,500 | SH |
| 3 | ALPS ETF TR | AMLP | 00162Q452 | $1.9M | 6.65% | 40,500 | SH |
| 4 | IMMUNEERING CORP | IMRX | 45254E107 | $1.8M | 6.37% | 277,501 | SH |
| 5 | CHENIERE ENERGY INC | LNG | 16411R208 | $1.5M | 5.36% | 7,900 | SH |
| 6 | PROSHARES TR | SDS | 74350P667 | $1.4M | 4.78% | 20,000 | SH |
| 7 | EQT CORP | EQT | 26884L109 | $1.3M | 4.68% | 25,000 | SH |
| 8 | 3M CO | MMM | 88579Y101 | $1.3M | 4.47% | 8,000 | SH |
| 9 | EXXON MOBIL CORP | XOM | 30231G102 | $1.2M | 4.20% | 10,000 | SH |
| 10 | PROSHARES TR | QID | 74349Y829 | $1.2M | 4.16% | 59,000 | SH |
| 11 | NAVIGATOR HLDGS LTD | NVGS | Y62132108 | $1.2M | 4.08% | 67,500 | SH |
| 12 | CHENIERE ENERGY PARTNERS LP | CQP | 16411Q101 | $1.0M | 3.62% | 19,409 | SH |
| 13 | MEDTRONIC PLC | MDT | G5960L103 | $960.6K | 3.35% | 10,000 | SH |
| 14 | SLB LIMITED | SLB | 806857108 | $959.5K | 3.35% | 25,000 | SH |
| 15 | EXPAND ENERGY CORPORATION | EXE | 165167735 | $956.8K | 3.34% | 8,670 | SH |
| 16 | EMCOR GROUP INC | EME | 29084Q100 | $917.7K | 3.20% | 1,500 | SH |
| 17 | UNITED PARCEL SERVICE INC | UPS | 911312106 | $743.9K | 2.60% | 7,500 | SH |
| 18 | DEVON ENERGY CORP NEW | DVN | 25179M103 | $634.4K | 2.21% | 17,320 | SH |
| 19 | SOLSTICE ADVANCED MATLS INC | SOLS | 83443Q103 | $626.7K | 2.19% | 12,900 | SH |
| 20 | BRIDGEBIO PHARMA INC | BBIO | 10806X102 | $573.7K | 2.00% | 7,500 | SH |
| 21 | ENCORE ENERGY CORP | EU | 29259W700 | $558.0K | 1.95% | 225,000 | SH |
| 22 | DIVERSIFIED HEALTHCARE TR | DHC | 25525P107 | $533.5K | 1.86% | 110,000 | SH |
| 23 | KNIGHT-SWIFT TRANSN HLDGS IN | KNX | 499049104 | $522.8K | 1.83% | 10,000 | SH |
| 24 | ASP ISOTOPES INC | ASPI | 00218A105 | $454.8K | 1.59% | 85,000 | SH |
| 25 | DENISON MINES CORP | DNN | 248356107 | $401.7K | 1.40% | 151,000 | SH |
| 26 | OLD DOMINION FREIGHT LINE IN | ODFL | 679580100 | $266.6K | 0.93% | 1,700 | SH |
| 27 | SAIA INC | SAIA | 78709Y105 | $261.2K | 0.91% | 800 | SH |
| 28 | SKYLINE BLDRS GROUP HLDG LTD | KAZR | G8193D104 | $112.3K | 0.39% | 38,200 | SH |
| 29 | DIANA SHIPPING INC | DSX | Y2066G104 | $43.4K | 0.15% | 26,116 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2025-12-31 | 2026-02-13 | $28.6M | 29 | 0000919574-26-000960 |
| 2025-09-30 | 2025-11-14 | $24.2M | 27 | 0000919574-25-007032 |