NEW YORK ( ETF Expert) -- What are the alternatives for an investor when a large majority of assets are fundamentally overvalued and technically overbought? One can wait to participate, of course. Even if there are no obvious reasons for sellers to enter the marketplace, they always do.On the other hand, stock fund managers are being flooded with cash that they need to put to work immediately. Most have very little wiggle room for keeping cash on hand. What's more, retail investors have been blitzed with stories of a "Great Rotation" into equities and away from bonds. Even with prices sitting at five-year highs, even with stocks soaring 10% in just two months, demand for risk assets is exceeding supply. Conceivably, this can push the S&P 500 to all-time records without much of a break. It follows that an ETF enthusiast with excess cash may need to save some cash for a dip-buying opportunity and some cash for shoring up weak spots in the portfolio. For example, if an individual is getting all of his income from high-yield corporate bonds, he/she may be missing out on unconventional income producers. Similarly, if one has been profiting primarily from U.S. stock success, he/she may want to reevaluate international prospects with better "valuations" and reasonable Relative Strength Index readings. Here are two ETFs that are worth looking at in today's "hyper-price-appreciating" marketplace: 1. SPDR DJ International Real Estate ( RWX). Inflation may not be an immediate concern for developed economies. (This is a debate in and of itself.) Yet the unprecedented level of central bank stimulus worldwide represents efforts to reflate/create higher prices. Simply put, real estate investment trusts (REITs) are uniquely qualified to hedge against rising rents and property gains. In more general terms, international REITs may present access to rising real estate prices and rising rents around the globe, while still garnering enviable income streams. SPDR DJ International Real Estate currently offers a fund dividend yield of 6.6% (index dividend yield of 3.8%) with only 2/3 the volatility of the S&P 500. The price-to-book of 1.07 also suggests that "this house is in order." Clearly, strong dividend yields and reasonable price stability offer differentiation from other assets in many portfolios. Equally worthy of note, RWX is trading in the Relative Strength Index mid-range of 50. Whereas so many assets are well above 70 and are technically overbought, the modest pullback here is refreshing.