Buffett InvestorsNZX · ASX
Back
SPN.NZ

South Port Share Price Hits $8.84 After a Record Profit, But the Yield Has Shrunk

South Port Share Price Today

The South Port share price sits at about $8.84 NZD (NZX: SPN) in mid-June 2026, up roughly 40% over the past 12 months and trading close to the top of its range. South Port operates the port at Bluff, the southernmost commercial port in New Zealand, and at a market cap near $232 million it is one of the smaller listed port operators on the exchange. It is also one of the most consistently profitable.

The share price strength is not a mystery. The company has just delivered the best results in its history, and the market has re-rated it accordingly. The catch for new buyers is that the yield, long the main reason to own South Port, has compressed as the price has climbed.

Recent Performance: A Record Year

South Port's FY2025 result (year to June 2025) was a standout:

  • •Revenue up 13% to $63.3 million
  • •EBITDA up 21% to $25.8 million (earnings before interest, tax, depreciation and amortisation)
  • •Record net profit of $13.3 million, up 81%
  • •EPS of $0.51, up from $0.28
  • •Total dividend of 28 cents per share

The momentum carried into the first half of FY2026 (to December 2025), where net profit after tax rose 46.8% to $8.45 million on revenue up 17.6% to $34.75 million. Trailing EPS now sits near $0.61. For a port handling Southland's exports of aluminium, logs, dairy, and fertiliser, that is a strong run driven by volumes and disciplined cost control.

Key Metrics

  • •Share price: ~$8.84 NZD
  • •Market cap: ~$232 million NZD
  • •52-week move: about +40%
  • •P/E ratio (trailing): ~14.5x
  • •EPS: ~$0.61
  • •Net tangible assets: ~$2.66 per share
  • •Gross dividend yield: ~4.6%

The valuation tells the story of the re-rating. South Port historically traded as a high-yield infrastructure stock. After a 40% price gain, the gross yield has fallen to around 4.6%, still respectable but well below where long-term holders bought in. At ~14.5x earnings the stock is no longer cheap for a small regional port, though that multiple is supported by genuine earnings growth rather than hope.

The Big Picture: A Small Port With a Wide Moat

South Port is the only deep-water port serving the lower South Island, which gives it a natural monopoly over Southland's bulk exports. That moat is the core of the investment case. Unlike larger, more cyclical operators such as Port of Tauranga and Napier Port, South Port is small, focused, and historically very efficient, often posting some of the best margins in the sector.

The flip side of a single-region port is concentration risk. A large share of throughput is tied to a handful of customers and commodities, most notably the Tiwai Point aluminium smelter. The smelter's long-term future has been a recurring overhang for the entire Southland economy, and any change there would matter directly to South Port's volumes.

What to Watch

  • •Tiwai Point: The aluminium smelter is the single biggest swing factor for South Port's cargo volumes. Its operating commitments are the most important external variable for the stock.
  • •Commodity cycles: Log, dairy, and fertiliser volumes move with global prices and the rural economy. A soft patch flows straight to the topline.
  • •Dividend trajectory: With the yield compressed, dividend growth now has to do the heavy lifting for total return. Watch whether the record profit translates into a lifted payout.
  • •Capital spending: Ports are capital-hungry. Any major dredging or infrastructure programme could affect free cash flow and dividends.

The Bottom Line

South Port has earned its re-rating with a record profit, strong first-half momentum, and the kind of moat that small monopoly infrastructure assets enjoy. The bull case is a high-quality, well-run port still growing earnings. The bear case is that after a 40% run the easy value is gone, the yield has shrunk to around 4.6%, and the whole story leans heavily on Tiwai Point staying open. This is a quality holding for income investors who already own it, but new buyers are paying up for a business with real concentration risk.

For how we think about yield, valuation, and concentration risk, see our methodology.

*Disclaimer: This article is for educational and informational purposes only. It does not constitute financial advice. Stock data may not be real-time. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.*