CMGSX Performance — BlackRock Mid-Cap Growth Equity Portfolio, Service Class
Data updated: 2026-09-25
CMGSX returned +9.36% year to date and +10.28% over one year to May 2026. Annualised returns are +12.95% over 3 years and +1.49% over 5 years. The fund trailed its US Mid-Cap Growth category average: $100 invested three years ago grew to $144, against $157 for the category, and to $110 over one year, against $119. Volatility over the past three years was 20.70% a year. In the 12 months to May 2026 the fund lost a net $2.4B, and assets reached $5.61B.
CMGSX Growth of $100
What $100 invested in BlackRock Mid-Cap Growth Equity Portfolio grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Growth category average over the same months.
| Period | CMGSX | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $110 | $119 |
| 3 years (Jun 2023 – May 2026) | $144 | $157 |
| 5 years (Jun 2021 – May 2026) | $108 | $129 |
| Since data start (Jul 2019 – May 2026) | $166 | $196 |
CMGSX Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +9.36% |
| 1 year | +10.28% |
| 3 years (annualised) | +12.95% |
| 5 years (annualised) | +1.49% |
CMGSX Annual Returns
Calendar-year total returns of BlackRock Mid-Cap Growth Equity Portfolio, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +9.36% |
| 2025 | +0.17% |
| 2024 | +12.17% |
| 2023 | +27.92% |
| 2022 | −37.51% |
| 2021 | +14.22% |
| 2020 | +45.74% |
| 2019 (Jul–Dec) | +1.77% |
CMGSX 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 | +0.4% | +3.3% | −8.0% | +9.1% | +5.1% | — | — | — | — | — | — | — |
| 2025 | +5.5% | −8.9% | −9.9% | +3.4% | +10.9% | +5.7% | −1.1% | −1.6% | +3.4% | −0.5% | −3.3% | −1.5% |
| 2024 | −0.9% | +8.0% | +0.9% | −7.2% | +1.4% | 0.0% | +0.7% | +2.0% | +3.0% | −1.3% | +12.8% | −6.2% |
| 2023 | +10.7% | −2.0% | +2.6% | −2.7% | +0.7% | +7.5% | +3.2% | −2.0% | −6.0% | −6.1% | +13.3% | +7.9% |
| 2022 | −14.9% | −2.4% | +0.2% | −14.6% | −3.8% | −7.0% | +13.4% | −6.3% | −11.3% | +3.9% | +7.9% | −7.2% |
| 2021 | −4.0% | +5.5% | −1.9% | +8.5% | −3.3% | +4.6% | +3.3% | +4.0% | −4.8% | +7.0% | −5.6% | +1.4% |
| 2020 | +4.7% | −6.1% | −13.3% | +14.7% | +11.9% | +0.9% | +7.8% | +2.7% | −1.0% | −0.1% | +11.8% | +7.8% |
| 2019 | — | — | — | — | — | — | +2.8% | −1.2% | −4.9% | +0.5% | +4.6% | +0.4% |
CMGSX Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 20.70%
- 3-year Sharpe ratio: 0.41 (vs 4.5% risk-free rate)
- Best month: +13.26% (Nov 2023)
- Worst month: −9.90% (Mar 2025)
CMGSX Fund Flows
Monthly money in and out of BlackRock Mid-Cap Growth Equity Portfolio, from SEC Form N-PORT.
- 12-month net flow: −$2.4B
- 12-month gross sales (incl. reinvestments): $2.2B
- Sales ÷ redemptions: 0.48×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $54.3M | $242.3M | −$187.9M |
| Apr 2026 | $49.2M | $244.7M | −$195.6M |
| Mar 2026 | $58.8M | $262.7M | −$203.9M |
| Feb 2026 | $55.3M | $375.2M | −$319.9M |
| Jan 2026 | $73.7M | $357.2M | −$283.5M |
| Dec 2025 | $1.0B | $462.3M | $567.8M |
| Nov 2025 | $61.9M | $302.0M | −$240.1M |
| Oct 2025 | $63.9M | $312.9M | −$249.0M |
| Sep 2025 | $66.4M | $500.0M | −$433.6M |
| Aug 2025 | $62.6M | $429.7M | −$367.1M |
| Jul 2025 | $558.7M | $597.7M | −$39.0M |
| Jun 2025 | $66.7M | $528.4M | −$461.7M |
CMGSX Assets Under Management
Net assets of BlackRock Mid-Cap Growth Equity Portfolio by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-29 | $5.61B |
| 2026-02-27 | $5.92B |
| 2025-11-28 | $6.80B |
| 2025-08-29 | $7.74B |
| 2025-05-30 | $8.69B |
| 2025-02-28 | $9.37B |
| 2024-11-29 | $11.45B |
| 2024-08-30 | $11.07B |
| 2024-05-31 | $11.67B |
| 2024-02-29 | $12.67B |
| 2023-11-30 | $11.53B |
| 2023-08-31 | $12.06B |
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.