A trader rubs his face while working on the floor of the New York Stock Exchange October 7, 2008 in New York City. Getty Images

Hearing the superlatives applied to Wall Street's fast start — the up 13 percent, its best first quarter in 21 years — might leave the impression the bulls have routed the doubters decisively. But it's closer to the truth to say that for two months, bulls rebounded from the devastating loss suffered at the end of 2018 by building up a nice 12 percent lead, and then for the past few weeks the defense has held off the bears to preserve it. The first couple of months were a supercharged "January effect," in which the smallest, riskiest, most aggressive stocks sped higher as the fourth-quarter growth panic, fund liquidations and tax-loss selling abated. Then in March a turn toward more stable, less cyclical, yield-and-cash-flow plays stepped up and small caps sank, as bond yields rushed lower and global growth remained wobbly. Those observers who defer strictly to the "message of the market" argue this defensive turn — combined with a furious bond rally and sudden outcry for a Federal Reserve rate cut — is a stark warning about heightened risk of recession and a downturn in corporate profits. But what about the idea that inherently strong markets find a way to support themselves even when the data soften up and risk appetites waver? Maybe the fact that the S&P 500 in March underwent only a couple of fairly benign 2 to 3 percent pullbacks despite plenty of decent excuses to buckle further is the relevant feature of this market's character. And perhaps the slight late-week lift in longer-term Treasury yields hints that the intense flight to bonds has tired itself out, releasing some pressure on financial stocks and leavening economic sentiment a bit? Just to detail the market's defensive emphasis in recent weeks, among the industry groups with the highest proportion of stocks in a confirmed uptrend, defined as having a 50-day average price above its 200-day, are utilities, software, real estate and household products. Featured among the weakest: energy, autos, banks and transportation.

Perfect stocks for this environment

Software has been perhaps the very strongest pocket of the market before, during and since the December downturn and it is emblematic of what this market appreciates now: strong, consistent cash flows, a secular-growth tailwind, "network" or "platform" economics that keep demand resilient and margins high. These are often expensive stocks with lots of momentum chasers in them, and so not defensive in the classic sense. But they aren't seen as reliant on every wiggle of world GDP for their growth, nor on the kindness of credit markets for their financing. A conservative approach has been nicely rewarded. The classic 60 percent stocks/40 percent bonds portfolio has done unusually well. The Vanguard Balanced Index fund (VBINX), which pursues roughly this approach, has a 9.5-percent total return this year, its best quarter in nearly a decade. Friday's 52-week high list speaks to this emphasis on stability: organic-growth consumer brands (Starbucks, Chipotle Mexican Grill, Estee Lauder, Procter & Gamble); software-based platforms (PayPal, Fiserv, ADP, Intuit); medical-tech systems (Thermo Fisher, Varian Medical, Waters); plus a smattering of industrials (Fastenal, Ametek, Ingersoll-Rand). Deutsche Bank strategists tracking fund flows note that the only equity-fund categories with net inflows last quarter were outright defensive offerings, namely real estate, telecom, health care, utilities and "minimum volatility." The largest in the latter category, iShares Edge MSCI Minimum Volatility ETF (USMV), has grown to $23.5 billion in assets as investors embrace a portfolio constructed to be less jumpy than the S&P 500 yet has dramatically outperformed it. The fund is at a record high, more than 2 percent above its September peak, even as the S&P itself remains more than 3 percent below its September best. iShares Edge MSCI Minimum Volatility ETF: Source: CNBC The market would likely be acting exactly the same way if it were bracing for oncoming recession or if this were simply a beneficial rotation toward sturdy groups in an economic soft patch, while the world awaits hoped-for signs of reviving China growth and a successful U.S. soft landing executed by the Fed. The bond market's rush to price in a likely rate cut (or two) in the next year, with White House economic officials publicly pressing the Fed for a half percentage point easing, don't exactly fit with a consensus for still above-trend U.S. GDP growth this year, firm credit markets, tight labor conditions and forecasts for a second-half pickup in corporate-profit growth.

Market still flat the last 14 months