Form N-1A Cover	Jul. 24, 2025
Prospectus [Line Items]
Document Type	497
Amendment Flag	false
Registrant Name	PGIM ROCK ETF TRUST
Entity Central Index Key	0001992104
Entity Investment Company Type	N-1A
Document Period End Date	Jul. 24, 2025
Prospectus Date	Dec. 16, 2024
Supplement to Prospectus [Text Block]	PGIM Rock ETF TrustPGIM S&P 500 Max Buffer ETF – August (the “Fund”)Supplement dated July 24, 2025 to the Fund’s Currently Effective ProspectusAs described in the Fund’s prospectus, an investment in shares of the Fund is subject to a pre-determined upside return cap (the “Cap”) that represents the maximum percentage return an investor can achieve from an investment in the Fund for the entire Target Outcome Period (generally, an approximately one-year period over which the Fund seeks to produce the target outcome). The Target Outcome Period for the Fund will commence on August 1, 2025 and end on July 31, 2026. The Fund’s Cap will not be determined until on or about the start of the Target Outcome Period. Investors are encouraged to visit the Fund’s website (https://www.pgim.com/investments/etf-buffer-fund)* on August 1, 2025 (or the first business day thereafter) to obtain information on the Cap for the Target Outcome Period. Investors should consider the Cap before investing in the Fund for the Target Outcome Period.The anticipated buffer for the Fund is also disclosed below. Investors are further encouraged to visit the website (https://www.pgim.com/investments/etf-buffer-fund)* for the Fund on August 1, 2025 (or the first business day thereafter) to obtain information on the final buffer for the Target Outcome Period.As of July 24, 2025, the expected range of the Fund’s Cap and anticipated buffer for the Target Outcome Period is set forth below.Fund NameTickerEstimated Cap RangeAnticipated BufferPGIM S&P 500 Max Buffer ETF – AugustPMAU5.2% – 8.2 % before fees and expenses100% before fees and expenses (4.7% – 7.7% after taking into account the Fund’s unitary management fee)(99.5% after taking into account the Fund’s unitary management fee)_________ * Reference to the Website does not incorporate the Website into this supplement or the Fund’s prospectus.