Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TGS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Helikon Investments Ltd | 2.3M | $81.2M | -28.5% | 1.559% | 3.07% |
| 2 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 1.1M | $39.4M | +3.1% | 0.756% | 0.05% |
| 3 | SPX Equities Gestao de Recursos Ltda | 1.0M | $35.5M | -15.0% | 0.681% | 2.96% |
| 4 | North of South Capital LLP | 641K | $22.2M | — | 0.426% | 1.99% |
| 5 | TT International Asset Management LTD | 608K | $21.1M | +57.1% | 0.404% | 2.30% |
| 6 | MORGAN STANLEY | 591K | $20.5M | +21.2% | 0.393% | 0.00% |
| 7 | Fundamenta Capital S.A. | 570K | $19.7M | -4.5% | 0.379% | 16.95% |
| 8 | Vennlight Capital Management, LP | 274K | $9.5M | — | 0.182% | 9.58% |
| 9 | MACKENZIE FINANCIAL CORP | 248K | $8.6M | +96.2% | 0.165% | 0.01% |
| 10 | VR Advisory Services Ltd | 195K | $6.8M | 0.0% | 0.130% | 0.80% |
| 11 | CITIGROUP INC | 189K | $6.5M | +129.6% | 0.125% | 0.00% |
| 12 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 187K | $6.5M | — | 0.124% | 0.00% |
| 13 | WEXFORD CAPITAL LP | 172K | $6.0M | +91.5% | 0.114% | 0.98% |
| 14 | CITADEL ADVISORS LLC | 163K | $5.7M | -45.7% | 0.108% | 0.00% |
| 15 | CI INVESTMENTS INC. | 154K | $5.3M | -5.7% | 0.102% | 0.03% |
| 16 | BNP PARIBAS ARBITRAGE, SA | 142K | $4.9M | +87.3% | 0.094% | 0.00% |
| 17 | KEMPEN CAPITAL MANAGEMENT N.V. | 126K | $4.4M | +24.9% | 0.084% | 0.04% |
| 18 | Moneda S.A. Administradora General de Fondos | 125K | $4.3M | -6.8% | 0.083% | 3.54% |
| 19 | VOLORIDGE INVESTMENT MANAGEMENT, LLC | 110K | $3.8M | -59.3% | 0.073% | 0.02% |
| 20 | PING CAPITAL MANAGEMENT, INC. | 105K | $3.6M | +2.0% | 0.070% | 1.40% |
| 21 | UBS Group AG | 103K | $3.6M | +27.7% | 0.069% | 0.00% |
| 22 | GOLDMAN SACHS GROUP INC | 100K | $3.5M | -44.3% | 0.067% | 0.00% |
| 23 | ABS Direct Equity Fund LLC | 74K | $2.6M | +41.8% | 0.049% | 1.95% |
| 24 | Meixler Investment Management, Ltd. | 61K | $2.2M | — | 0.041% | 1.16% |
| 25 | Uniplan Investment Counsel, Inc. | 60K | $2.1M | +812.4% | 0.040% | 0.21% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TGS — a direct measure of their conviction.
Filings activity in TGS during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 81 | +16% | 7.03% | +1.05 pp | $350M | +18% |
| Q4 2025 | 70 | +35% | 5.98% | +1.59 pp | $297M | +36% |
| Q3 2025 | 52 | 20% | 4.39% | +0.45 pp | $219M | +12% |
| Q2 2025 | 65 | +8.3% | 3.94% | +0.74 pp | $196M | +23% |
| Q1 2025 | 60 | 7.7% | 3.20% | +0.20 pp | $159M | +6.7% |
| Q4 2024 | 65 | +38% | 3.00% | +1.49 pp | $149M | +99% |
| Q3 2024 | 47 | +0.0% | 1.51% | 0.15 pp | $75M | 9.1% |
| Q2 2024 | 47 | — | 1.66% | — | $82M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 9, 2026 | Fallo Luis Alberto | Buy | 5K | $29.26 | $137K |
Quick answers to the most common questions about buying TGS stock.
Based on Q1 2026 13F filings, institutional ownership of Transportadora de Gas del Sur S.A. stands at 7.0%, held across 81 reporting institutions.
Helikon Investments Ltd is the largest reported institutional holder of TGS, with approximately 2,347,333 shares worth $0.08B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of TGS, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for TGS is 70 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
23 institutions opened new positions in TGS during Q1 2026, while 12 fully exited. 44 added to existing positions and 12 trimmed.
TGS institutional ownership rose by 1.05 percentage points quarter-over-quarter, with a net change of +11 holders.
The top 10 institutions account for 75.5% of all reported 13F value in TGS, and the top 25 account for 94.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Transportadora de Gas del Sur S.A. (TGS) Institutional Ownership