X0101 EFFECT 33 LIVE 2007-05-01 0001104659-07-030472 485APOS 0000814232 RS INVESTMENT TRUST 033-16439 S000007373 RS Diversified Growth Fund C000020249 Class A S000007373 RS Diversified Growth Fund C000036593 Class K S000007373 RS Diversified Growth Fund C000050173 Class C S000007374 RS Smaller Company Growth Fund C000020250 Class A S000007374 RS Smaller Company Growth Fund C000036595 Class K S000007374 RS Smaller Company Growth Fund C000041713 Class C S000007375 RS Value Fund C000020251 Class A S000007375 RS Value Fund C000036597 Class K S000007375 RS Value Fund C000041715 Class C S000007376 RS Emerging Growth Fund C000020252 Class A S000007376 RS Emerging Growth Fund C000036599 Class K S000007376 RS Emerging Growth Fund C000041717 Class C S000007377 RS Global Natural Resources Fund C000020253 Class A S000007377 RS Global Natural Resources Fund C000036600 Class K S000007377 RS Global Natural Resources Fund C000041719 Class C S000007378 RS Growth Fund C000020254 Class A S000007378 RS Growth Fund C000036603 Class K S000007378 RS Growth Fund C000041722 Class C S000007379 RS Information Age Fund C000020255 Class A S000007379 RS Information Age Fund C000036605 Class K S000007379 RS Information Age Fund C000041723 Class C S000007380 RS Internet Age Fund C000020256 Class A S000007380 RS Internet Age Fund C000036607 Class K S000007381 RS Investors Fund C000020257 Class A S000007381 RS Investors Fund C000036609 Class K S000007381 RS Investors Fund C000041726 Class C S000007382 RS MidCap Opportunities Fund C000020258 Class A S000007382 RS MidCap Opportunities Fund C000036611 Class K S000007382 RS MidCap Opportunities Fund C000041728 Class C S000007383 RS Partners Fund C000020259 Class A S000007383 RS Partners Fund C000036613 Class K S000013475 RS Asset Allocation Fund C000036405 Class A S000013475 RS Asset Allocation Fund C000036406 Class B S000013475 RS Asset Allocation Fund C000036407 Class C S000013475 RS Asset Allocation Fund C000036408 Class K S000013476 RS S&P 500 Index Fund C000036409 Class A S000013476 RS S&P 500 Index Fund C000036410 Class B S000013476 RS S&P 500 Index Fund C000036411 Class C S000013476 RS S&P 500 Index Fund C000036412 Class K S000013477 RS Small Cap Core Equity Fund C000036413 Class A S000013477 RS Small Cap Core Equity Fund C000036414 Class B S000013477 RS Small Cap Core Equity Fund C000036415 Class C S000013477 RS Small Cap Core Equity Fund C000036417 Class K S000013478 RS Tax-Exempt Fund C000036418 Class A S000013478 RS Tax-Exempt Fund C000036419 Class C S000013479 RS Cash Management Fund C000036420 Class A S000013479 RS Cash Management Fund C000036421 Class B S000013479 RS Cash Management Fund C000036422 Class C S000013479 RS Cash Management Fund C000036423 Class K S000013480 RS Core Equity Fund C000036424 Class B S000013480 RS Core Equity Fund C000036425 Class C S000013480 RS Core Equity Fund C000036427 Class K S000013480 RS Core Equity Fund C000036428 Class A S000013481 RS Emerging Markets Fund C000036429 Class A S000013481 RS Emerging Markets Fund C000036430 Class B S000013481 RS Emerging Markets Fund C000036431 Class C S000013481 RS Emerging Markets Fund C000036433 Class K S000013482 RS High Yield Bond Fund C000036434 Class A S000013482 RS High Yield Bond Fund C000036435 Class B S000013482 RS High Yield Bond Fund C000036436 Class C S000013482 RS High Yield Bond Fund C000036437 Class K S000013483 RS International Growth Fund C000036438 Class A S000013483 RS International Growth Fund C000036439 Class B S000013483 RS International Growth Fund C000036440 Class C S000013483 RS International Growth Fund C000036442 Class K S000013484 RS Investment Quality Bond Fund C000036443 Class A S000013484 RS Investment Quality Bond Fund C000036444 Class B S000013484 RS Investment Quality Bond Fund C000036445 Class C S000013484 RS Investment Quality Bond Fund C000036446 Class K S000013485 RS Large Cap Value Fund C000036447 Class A S000013485 RS Large Cap Value Fund C000036448 Class B S000013485 RS Large Cap Value Fund C000036449 Class C S000013485 RS Large Cap Value Fund C000036450 Class K S000013486 RS Low Duration Bond Fund C000036451 Class A S000013486 RS Low Duration Bond Fund C000036452 Class B S000013486 RS Low Duration Bond Fund C000036453 Class C S000013486 RS Low Duration Bond Fund C000036454 Class K