COTZX Performance — Columbia Thermostat Fund, Institutional Class
Data updated: 2026-08-28
COTZX returned +3.17% year to date and +9.13% over one year to Jun 2026. Annualised returns are +10.39% over 3 years and +4.56% over 5 years. The fund trailed its US Large Blend category average: $100 invested three years ago grew to $135, against $157 for the category, and to $109 over one year, against $118. Volatility over the past three years was 7.48% a year. In the 12 months to Jun 2026 the fund lost a net $58.8M, and assets reached $1.26B.
COTZX Growth of $100
What $100 invested in Columbia Thermostat Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Large Blend category average over the same months.
| Period | COTZX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $109 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $135 | $157 |
| 5 years (Jul 2021 – Jun 2026) | $125 | $161 |
| Since data start (Jul 2019 – Jun 2026) | $181 | $229 |
COTZX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +3.17% |
| 1 year | +9.13% |
| 3 years (annualised) | +10.39% |
| 5 years (annualised) | +4.56% |
COTZX Annual Returns
Calendar-year total returns of Columbia Thermostat Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +3.17% |
| 2025 | +15.03% |
| 2024 | +7.97% |
| 2023 | +11.67% |
| 2022 | −12.93% |
| 2021 | +6.42% |
| 2020 | +29.63% |
| 2019 (Jul–Dec) | +5.08% |
COTZX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.3% | +0.8% | −2.6% | +3.7% | +1.3% | −0.2% | — | — | — | — | — | — |
| 2025 | +1.3% | +0.9% | −1.8% | +1.6% | +3.1% | +3.3% | +0.9% | +1.6% | +1.7% | +1.1% | +0.4% | 0.0% |
| 2024 | +0.1% | −0.9% | +1.0% | −2.8% | +3.7% | +2.0% | +2.2% | +2.7% | +1.0% | −2.1% | +2.9% | −1.9% |
| 2023 | +4.3% | −2.4% | +2.6% | +0.5% | −0.5% | +1.8% | +0.8% | −1.1% | −3.0% | −2.1% | +6.3% | +4.3% |
| 2022 | −2.3% | −1.3% | −2.4% | −4.0% | +0.8% | −3.8% | +4.0% | −2.5% | −5.9% | +1.5% | +3.8% | −1.3% |
| 2021 | −0.4% | +1.2% | +1.3% | +2.7% | +0.4% | +0.6% | +0.9% | +0.2% | −1.3% | +0.4% | −0.1% | +0.3% |
| 2020 | +1.2% | +0.4% | +0.1% | +8.7% | +2.8% | +1.4% | +3.4% | +2.8% | −1.3% | −1.2% | +6.1% | +2.3% |
| 2019 | — | — | — | — | — | — | +0.7% | +0.9% | +0.3% | +1.0% | +1.3% | +0.7% |
COTZX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 7.48%
- 3-year Sharpe ratio: 0.79 (vs 4.5% risk-free rate)
- Best month: +6.29% (Nov 2023)
- Worst month: −3.02% (Sep 2023)
COTZX Fund Flows
Monthly money in and out of Columbia Thermostat Fund, from SEC Form N-PORT.
- 12-month net flow: −$58.8M
- 12-month gross sales (incl. reinvestments): $221.4M
- Sales ÷ redemptions: 0.79×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $14.6M | $32.0M | −$17.4M |
| May 2026 | $10.6M | $45.4M | −$34.8M |
| Apr 2026 | $15.3M | $17.8M | −$2.4M |
| Mar 2026 | $17.6M | $17.2M | $352K |
| Feb 2026 | $13.0M | $18.6M | −$5.6M |
| Jan 2026 | $15.8M | $26.4M | −$10.6M |
| Dec 2025 | $48.3M | $24.3M | $24.0M |
| Nov 2025 | $13.8M | $20.2M | −$6.4M |
| Oct 2025 | $19.6M | $17.7M | $1.9M |
| Sep 2025 | $14.8M | $22.3M | −$7.5M |
| Aug 2025 | $15.1M | $17.6M | −$2.5M |
| Jul 2025 | $22.7M | $20.6M | $2.1M |
COTZX Assets Under Management
Net assets of Columbia Thermostat Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $1.26B |
| 2026-03-31 | $1.26B |
| 2025-12-31 | $1.30B |
| 2025-09-30 | $1.29B |
| 2025-06-30 | $1.25B |
| 2025-03-31 | $1.16B |
| 2024-12-31 | $1.20B |
| 2024-09-30 | $1.27B |
| 2024-06-30 | $1.25B |
| 2024-03-31 | $1.31B |
| 2023-12-31 | $1.34B |
| 2023-09-30 | $1.30B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.