Fund-vs-fund · Diversified
Booster Socially Responsible Balanced Fund vs Harbour Sustainable Impact Fund
Both are Diversified funds available to NZ retail investors. Numbers below are sourced from the FMA Disclose register via Sorted Smart Investor and reflect the latest published quarterly fund updates.
Why these two differ
The most material structural difference between these two funds is their asset allocation. The Harbour Sustainable Impact Fund holds 98.31% in growth assets, making it effectively an equity-only portfolio despite its "Diversified" category label. The Booster Socially Responsible Balanced Fund sits at 53.72% growth assets, reflecting a genuinely balanced split between growth and income-oriented holdings. This divergence drives meaningfully different risk profiles: Harbour carries a risk indicator of 5 while Booster sits at 4 on the standard 1–7 scale.
Fee structures differ substantially. Harbour discloses an annual fund charge of 0.27%, compared with Booster's 1.33% — a spread of over one percentage point annually. The five-year return figures move in the opposite direction: Booster reports 4.00% per annum against Harbour's 0.15%, though these figures reflect different time periods, market exposures, and fee deductions, so direct comparison requires caution.
Concentration also differs. Harbour's top five holdings — Infratil, Contact Energy, Meridian Energy, A2 Milk, and Fisher & Paykel Healthcare — each exceed 5% of the portfolio, signalling meaningful New Zealand equity concentration. Booster's top five are more dispersed globally, with NVIDIA, Apple, and Microsoft appearing alongside Fisher & Paykel Healthcare, and no single position above 3.41%.
The Booster fund is a KiwiSaver scheme account product; Harbour's fund appears available outside KiwiSaver. Both apply a socially responsible or sustainable investment mandate, though the specific screening criteria differ between managers.
Verify all figures against each fund's current PDS and latest Quarterly Fund Update on FMA Disclose before relying on this summary.
Comparison generated 2026-07-05 from each fund's FMA Disclose QFU facts as at that date. If the underlying facts change, this narrative is withheld until it is regenerated — the tables on this page always reflect the current data.
What's different at a glance
- Harbour Sustainable Impact Fund charges 1.06% lower in annual fund charges (0.27% vs 1.33%).
- Both are New Zealand PIE funds — investor tax is capped at the Prescribed Investor Rate (PIR), maximum 28%.
Where each fund sits in its cohort
Percentile rank vs all 67 diversified funds we've matched on Sorted Smart Investor. Mechanical only — no opinion, no forward-looking view.
Annual fund charge
Lower is better
Booster
1.33%
Highest 20% of cohort
Harbour
0.27%
Lowest 13% of cohort
5-year return p.a.
Past performance — not a predictor
Booster
4.00%
Upper half over 5 years
Harbour
0.15%
Bottom 1% over 5 years
Fund size
Larger = more stable, lower close-risk
Booster
NZ$427m
Largest 22% in cohort
Harbour
NZ$380m
Largest 23% in cohort
| Metric | Booster | Harbour | Lower / higher is |
|---|---|---|---|
| Annual fund charge | 1.33% | 0.27% | Lower is better |
| Risk indicator (1–7) | 4 | 5 | Higher = more volatility |
| 5-year return p.a. | 4.00% | 0.15% | Higher is better (past not future) |
| Fund size | NZ$427m | NZ$380m | Larger = more stable, lower close-risk |
| Growth / income split | 54% / 46% | 98% / 2% | More growth = higher long-run return + volatility |
| NZ tax structure | PIE (PIR-capped) | PIE (PIR-capped) | PIE = simpler. FIF = annual return. |
| Currency hedging | — | — | Hedged smooths NZD/foreign FX moves at a small cost. |
| Responsible investment screening | Yes | Yes | Specific exclusions live in each fund's SIPO. |
| Available via | Direct | Direct | Platforms accepting retail subscriptions. |
Portfolio overlap
How many top-10 positions both funds hold, and at what weight. Computed from each fund's most recently disclosed top-10 holdings — exact-name matched (Microsoft Corp. = Microsoft Corporation), with a Cash / Cash & Equivalents collapse rule.
Matching holdings
3
of each fund's top 10
Booster weight in shared
4.1%
of Booster Socially Responsible Balanced Fund top 10 is shared
Harbour weight in shared
17.6%
of Harbour Sustainable Impact Fund top 10 is shared
| Holding | Booster | Harbour |
|---|---|---|
 Fisher & Paykel Healthcare Corporation Limited NZ | 1.90% | 5.81% |
 Auckland International Airport Limited NZ | 1.18% | 5.57% |
 Infratil Limited NZ | 1.02% | 6.21% |
"Min weight" = the smaller of the two weights — a conservative read of how much exposure you'd have to that position if you held both funds.
What each fund says it does
Booster
Booster Socially Responsible Balanced Fund
The Socially Responsible Balanced Fund is suited to investors who seek a medium level of returns on average over medium term periods (five years plus), allowing for shorter-term ups and downs, whilst excluding investments which do not satisfy certain socially responsible investment criteria. We aim to achieve this by investing in a mix of income and growth assets, and the application of our Responsible Investment Policy.Full Booster Booster Socially Responsible Balanced Fund profile →
Harbour
Harbour Sustainable Impact Fund
This Fund is designed to track the S&P/NZX 50 Portfolio Index, with exclusions to companies including but not limited to, large carbon emitters, gambling, firearms, and companies with human and animal rights violations. For full details of the exclusions for this Fund please see the Environmental, Social and Governance Policy (ESG Policy) on our website at Responsible Investing - Harbour Asset Management. There are positive and negative tilts applied to the remaining companies based on Harbour's proprietary Corporate Behaviour Score.Full Harbour Harbour Sustainable Impact Fund profile →
Documents
Crawled directly from each manager's website. How we record provenance →
Booster
Harbour
LiveLast verified 2026-05-08
Common questions
What's the difference between the Booster Socially Responsible Balanced Fund and the Harbour Sustainable Impact Fund?
Which fund has lower fees, Booster Socially Responsible Balanced Fund or Harbour Sustainable Impact Fund?
How do the 5-year returns compare?
Are both funds PIE-taxed in NZ?
Where can I read the official documents for these funds?
