T. Rowe Price Mid-Cap Index I (TRMSX)

Fund Assets	495.35M
Expense Ratio	0.146%
Min. Investment	$500,000
Turnover	39.30%
Dividend (ttm)	0.21
Dividend Yield	0.86%
Dividend Growth	15.13%
Payout Frequency	Annual
Ex-Dividend Date	Dec 11, 2025

Previous Close	24.65
YTD Return	9.28%
1-Year Return	8.04%
5-Year Return	29.42%
52-Week Low	20.83
52-Week High	25.96
Beta (5Y)	1.10
Holdings	526
Inception Date	Dec 9, 2015

About TRMSX

T. Rowe Price Mid-Cap Index Fund I Class is an open-end mutual fund designed to mirror the performance of the Russell Select Midcap Index, which tracks a broad spectrum of U.S. mid-cap companies. The fund primarily invests at least 80% of its net assets in stocks that are part of this benchmark, employing a full replication strategy to closely follow the index’s returns. By focusing on mid-cap equities, the fund provides exposure to companies that are generally considered to offer a balance between growth potential and established market presence. Spanning diversified industries, the portfolio includes a mix of growth and value stocks, reflecting the dynamic nature of the U.S. mid-cap segment. Notable for its low expense ratio and minimal fossil fuel exposure, the fund aims to deliver cost-effective index investing to institutional and individual investors seeking mid-sized company diversification within their broader equity allocation.

• Fund Family: T. Rowe Price
• Category: Mid-Cap Growth
• Performance Rating: Above Average
• Risk Rating: Above Average
• Stock Exchange: Nasdaq
• Ticker Symbol: TRMSX
• Share Class: -i Class
• Index: Index is not available on Lipper Database

Performance

TRMSX had a total return of 8.04% in the past year, including dividends. Since the fund's inception, the average annual return has been 7.38%.

Other Share Classes

These are alternative share classes of the same fund, from the same provider.

Symbol	Share Class	Expense Ratio
TRSZX	-z Class	n/a

Top 10 Holdings

14.17% of assets

Name	Symbol	Weight
GRS - SECURITY LENDING COLLATERAL - TREASURY RESERVE FUND - Collateral	n/a	3.01%
Space Exploration Technologies Corp.	SPCX	1.60%
Snowflake Inc.	SNOW	1.50%
Bloom Energy Corporation	BE	1.43%
Cloudflare, Inc.	NET	1.37%
Astera Labs, Inc.	ALAB	1.31%
Spotify Technology S.A.	SPOT	1.28%
Rocket Lab Corporation	RKLB	0.96%
Cheniere Energy, Inc.	LNG	0.88%
Nu Holdings Ltd.	NU	0.82%

Dividend History

Ex-Dividend	Amount	Pay Date
Dec 11, 2025	$1.4319	Dec 12, 2025
Dec 12, 2024	$0.4129	Dec 13, 2024
Dec 13, 2023	$0.1524	Dec 14, 2023
Dec 13, 2022	$0.2635	Dec 14, 2022
Dec 13, 2021	$0.785	Dec 14, 2021
Dec 11, 2020	$0.640	Dec 14, 2020

Data Sources: Tiingo, Twelve Data, and more

Historical data is provided by Tiingo. Delayed stock pricing data is provided by Twelve Data. Several fund data points are also provided by Finnhub.

Last checked:

Oct 31, 2026

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