DTRXX.US is a money market fund, so its price, ideally, stays at $1.00. However, slight variations can occur. Fund Performance: Investment returns influence the fund's yield and perceived value, impacting demand and price.

Interest Rates: Rising rates generally increase money market fund yields, attracting investment and potentially pushing the price slightly above $1.00. Conversely, falling rates can decrease yield and lower demand.

Credit Risk: Although money market funds primarily invest in high-quality, short-term debt, concerns about issuer creditworthiness can lead to slight price declines as investors redeem shares.

Market Liquidity: Periods of market stress or reduced liquidity can cause temporary price fluctuations as investors seek to convert assets to cash.

Fund Expenses: Management fees and other operating expenses can subtly impact the net yield and attractiveness of the fund, potentially affecting its price relative to other money market funds.

Supply and Demand: High demand can briefly push the price above $1.00, while increased redemptions can exert downward pressure.

Regulatory Changes: Changes in regulations governing money market funds can alter their risk profile and investor perception, leading to price adjustments.