![David Grumhaus](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Net worth: 331 127 $ as of 31/05/2026
David Dean Grumhaus is President & Chief Executive Officer at DNP Select Income Fund, Inc., Duff & Phelps Utility & Infrastructure Fund, Inc., and DTF Tax-Free Income 2028 Term Fund, Inc. since 2021.
Since 2014, serves as President & Chief Investment Officer at Duff & Phelps Investment Management Co. Former roles include Investment Banker at Goldman Sachs & Co. LLC and William Blair & Co. LLC, Partner at Copia Capital LLC from 2011 to 2012, and Chief Investment Officer & Lead Portfolio Manager at Duff & Phelps Select MLP & Midstream Energy Fund, Inc. Education includes an MBA from Harvard University and undergraduate studies at Princeton University.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 25/08/2025 | 11,612 ( 0.03% ) | 166 168 $ | 31/05/2026 | |
| 26/11/2024 | 8,361 ( 0% ) | 88 794 $ | 31/05/2026 | |
| 25/08/2025 | 6,652 ( 0.09% ) | 76 165 $ | 31/05/2026 |
| Companies | Position | Start |
|---|---|---|
| DUFF & PHELPS UTILITY AND INFRASTRUCTURE FUND INC. | Chief Executive Officer | 01/03/2021 |
| DNP SELECT INCOME FUND INC. | Chief Executive Officer | 01/01/2021 |
| DTF TAX-FREE INCOME 2028 TERM FUND INC. | Chief Executive Officer | 01/01/2021 |
Duff & Phelps Investment Management Co.
 Duff & Phelps Investment Management Co. Investment ManagersFinance Duff & Phelps provides specialty investment strategies that enhance client outcomes through active portfolio management and customized solutions. Their investment strategies include global listed infrastructure, global listed real estate, MLPs & Energy, international equities, investment grade fixed income and domestic securities. In the portfolio construction process, the firm utilizes top-down macro considerations with fundamental bottom-up company research analysis. | President | 01/01/2021 |
| Companies | Position | End |
|---|---|---|
Copia Capital LLC
 Copia Capital LLC Investment ManagersFinance Copia Capital takes long and short positions in the equity and equity-linked securities of US companies in the utilities, energy minerals, industrial services and materials sectors. The firm invests across all market-caps. They maintain a very high turnover rate | Analyst-Equity | 01/01/2012 |
| DUFF & PHELPS SELECT MLP AND MIDSTREAM ENERGY FUND | Chief Investment Officer | - |
William Blair & Co. LLC
 William Blair & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Corporate Officer/Principal | - |
Goldman Sachs & Co. LLC
 Goldman Sachs & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Corporate Officer/Principal | - |
Active
Inactive
Listed companies
Private companies
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
| Private companies | 10 |
|---|---|
Duff & Phelps Investment Management Co.
Duff & Phelps Investment Management Co. Investment ManagersFinance Duff & Phelps provides specialty investment strategies that enhance client outcomes through active portfolio management and customized solutions. Their investment strategies include global listed infrastructure, global listed real estate, MLPs & Energy, international equities, investment grade fixed income and domestic securities. In the portfolio construction process, the firm utilizes top-down macro considerations with fundamental bottom-up company research analysis. | Finance |
DNP Select Income Fund
 DNP Select Income Fund Investment Trusts/Mutual FundsMiscellaneous Functions as a closed-end investment fund or Investment trust | Miscellaneous |
Duff & Phelps Utility and Infrastructure Fund Inc.
 Duff & Phelps Utility and Infrastructure Fund Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
DTF Tax-Free Income 2028 Term Fund Inc.
 DTF Tax-Free Income 2028 Term Fund Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
Duff & Phelps Select MLP & Midstream Energy Fund Inc.
 Duff & Phelps Select MLP & Midstream Energy Fund Inc. Investment Trusts/Mutual FundsMiscellaneous Acts as Closed-End Investment Fund/Investment Trust | Miscellaneous |
Harvard University
 Harvard University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Goldman Sachs & Co. LLC
Goldman Sachs & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
William Blair & Co. LLC
William Blair & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
Copia Capital LLC
Copia Capital LLC Investment ManagersFinance Copia Capital takes long and short positions in the equity and equity-linked securities of US companies in the utilities, energy minerals, industrial services and materials sectors. The firm invests across all market-caps. They maintain a very high turnover rate | Finance |
Princeton University
 Princeton University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Select your edition
All financial news and data tailored to specific country editions
