KiwiSaver: Why Big-Name Fund Managers are Underperforming (2026)

New Zealand’s KiwiSaver debate isn’t about luck; it’s about philosophy, costs, and what we expect from our retirement money. The recent performance data from big-name fund managers shows a stubborn split in the market: passive funds are delivering sharper returns in some periods, while active managers insist their research-heavy, risk-aware approach still has merit. My take: the era of simple “active outperforms” or “passive outperforms” is too narrow. What matters is long-term consistency, cost discipline, and how investment convictions survive a full market cycle.

Why the numbers are controversial
- The vibe right now: passive funds, which simply track indices, are often quietly outpacing many active peers on a total-return basis over multi-year horizons. This isn’t a one-off fluke; it reflects the cost burden and the difficulty of beating the benchmark after fees. For example, Simplicity’s passive funds showed strong annual figures over both one- and three-year spans, while several active providers trailed.
- The active camp defends itself with a different lens: markets swing, portfolios tilt toward high-growth names, and when a few winners dominate, the arithmetic can look painful for the broader fund. Kernel’s numbers illustrate this tension vividly: stellar single-year gains can be undone if you’re not positioned precisely for the next big thing, and shrinking market breadth makes active bets harder to justify.

A personal snapshot of the big questions
What’s really at stake isn’t one year’s performance; it’s whether the chosen approach—active or passive—can deliver reliable outcomes through a full market cycle. From my perspective, the value of active management hinges on three factors: cost discipline, risk management, and the ability to anticipate regime shifts (inflation, rates, tech cycles). When those factors align, active managers can outperform for extended stretches. When they don’t, investors end up paying higher fees for an performance profile that largely resembles the market after costs.

  • Costs matter. Active funds carry higher fees and more trading activity. In theory, higher fees should be offset by superior returns, but the data often doesn’t bear that out over common horizons. That’s why you see a lot of “natural underperformance” among active managers after you net fees. If you’re buying a fund with a long-term track record but high fees, you’re paying a premium for a bet that the next era will reward active stock-picking. That bet is harder to justify when market leadership keeps shifting and the breadth of winners narrows.
  • Risk management is the silent hero. Milford’s approach, emphasizing diversification and risk controls, explains their comparatively steadier longer-run narrative. It’s tempting to chase the latest hot sector, but that often introduces concentration risk and magnifies drawdowns when those sectors cool.
  • Market structure and access shapes outcomes. Kernel’s point about offshore exposure and the limited ability of large KiwiSaver pools to maneuver in a global stock universe underscores a practical constraint: even the best stock-pickers are bound by the size and liquidity of their investors’ capital. In a world where a handful of names drive indexes, being underweight those winners can hurt, while overweight can backfire if growth surprises turn negative.

What this tells us about the future of KiwiSaver
- Long-term mindset beats short-term heroics. The consensus among several managers is that three-year snapshots strip away the investment cycle’s full texture. Investors should look for a durable process, not a single-year miracle. My reading: focus on funds with a clear investment framework, transparent risk controls, and a demonstrated ability to adapt as markets evolve.
- Consistency matters more than peak performance. Generate’s track record of steady top-tier results over a decade signals that a repeatable process can outperform the noise. If consistency is your anchor, you should value a fund manager’s ability to stay the course even when the headlines scream volatility.
- The “who wins” question remains partly unknowable. Three-quarters of stocks underperform the market on a long horizon, with the rest lifting the index. That’s a stark reminder that forecasting winners is a social science, not a precise formula. Investors should diversify and be cautious about tilting too aggressively toward a single narrative (AI, tech, or otherwise).

Deeper implications for investors
- The structure of KiwiSaver matters. With a large share of holdings offshore, New Zealand managers face informational and access limits that can hamper their ability to outperform globally. In practice, this means passive or diversified passive-lite options may offer more reliable outcomes for many savers than highly concentrated active bets.
- Investor behavior shapes outcomes as much as markets do. When performance spikes, others mimic the winning strategy, diluting alpha and making it harder to sustain outperformance. This is a classic endurance problem: the more popular a tactic becomes, the less likely it is to deliver next-round gains. The takeaway is humility—don’t chase last year’s winners assuming they’ll continue their magic.
- Fees are the enduring hurdle. Generating meaningful long-run excess returns requires not just skill but a willingness to accept lower-cost structures when evidence favors broad exposure over boutique models. In other words, the edge is as much about cost discipline as it is about stock-picking prowess.

Conclusion: a more nuanced stance for retirement investing
Personally, I think the smart move for KiwiSaver investors is to blend clarity of purpose with disciplined flexibility. Seek managers who offer transparent processes, verifiable long-term performance, and prudent risk management, but don’t pay a premium for a narrative that promises the moon. What makes this particularly fascinating is how the debate encapsulates a broader investor truth: there are no free lunches in investing, only trade-offs between potential upside, risk, and costs.

If you take a step back and think about it, the current discourse is less about choosing between active and passive and more about choosing a philosophy of investing that you can live with through good times and bad. The best path for many savers may be a core passive exposure complemented by selective active strategies where managers demonstrate a clear, repeatable edge and a durable risk framework. That balance—low-cost core, thoughtful satellite bets—could be the most sane, long-term answer in a world of shifting regimes and ever-present headlines.

KiwiSaver: Why Big-Name Fund Managers are Underperforming (2026)

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