LONDON, July 26 (Reuters) - Even as fears of a 2023 U.S. recession recede and stock market bears concede defeat, there's scant sign of party mode.

This pandemic-distorted cycle - compounded by war, energy price shocks and reshaped geopolitics - is proving too complex to extrapolate easily.

After wild swings of output, prices, employment, liquidity and interest rates, firm convictions about the precise onset of "technical" recessions - or even previously reliable gauges of bull and bear markets - have all become a bit suspect.

Endless nuance is now demanded - how to square 20-year-high interest rates with near-record low unemployment; a credit squeeze with rising interest income on savings; a demand boost from disinflation but waning corporate pricing power; or an artificial intelligence boom alongside a factory slump.

Whether on a domestic or global scale, aggregate views of the economy, or stock market, right now are likely misleading.

But as bets on an economic "soft landing" become consensus again, Wall St's main stock benchmark has risen back to within 5% of its record highs just above 4,800 points - a 30% rebound from 2022 lows that has almost reversed last year's 27% peak-to-trough plunge.

A bull to bear market and back again in little over 18 months - or so it seems.

The zeitgeist of the week for many investors was Morgan Stanley's U.S. stock market guru Mike Wilson, who has doggedly held one of the most bearish year-end S&P500 forecasts of 3,900, admitting to clients "we were wrong" - citing a disinflation spur that's gone further and persisted longer than anticipated.

Far from chastened, however, Wilson remains as bearish for next year. His 4,200 call for June 2024 is still 8% lower than from here.

The mea culpa was remarkable, however, in part because of Wilson's past success - not least a stellar call on the near V-shaped market recovery around the pandemic rescues three years ago that prompted investors to sit up and take notice.

And global funds still cling to underweight equity positions seven months into what's been a bumper year for many sectors. But it also appeared to be a capitulation of sorts from one of the last major bears on the Street. Only last week, Morgan Stanley upped its 2023 U.S. economic growth forecasts due to a rethink on infrastructure investment.

Of course, notoriously tricky point forecasting is full of swings and roundabouts. You win some, you lose some. And Morgan Stanley is far from alone, as forecasts and outlooks have shifted around midyear.

JETTISONED

Barclays economists told clients this week they'd "jettisoned" forecasts for a U.S. recession by the fourth quarter, pushing expectations of a "mild downturn" into 2024. And the International Monetary Fund, which nudges and tweaks its own forecasts at least four times a year, on Tuesday pushed its 2023 full-year U.S. growth forecast up to 1.8% - 0.4 points higher than it saw in January. So the coast seems to have cleared for markets now lapping up hopes of disinflation, peak rates and a soft landing.

Much will hinge on how long global portfolios remain persistently underweight equity, as that offers oxygen to market pricing and fuels demand via eventual rebalancing.

But that has its limits.

A Natixis Investment Managers' survey of its portfolio managers and strategists shows less than one-in-five now see a significant risk of recession this year - and yet, they still warn against "complacency" and half expect the stocks rally to "fade away" by yearend.

To some extent, an obsession with technical definitions of recession as an investment guide is part of the problem.

After all, early data slices and then revisions have had the euro zone economy edging in and out of recession at least three times this year and the region's stocks are still up 13%.

The complexity of this peculiar cycle confounds relatively simple calculations.

BLUNTED Chief among the puzzles is the variable impact of sharply higher interest rates on both households and firms. Many households with excess pandemic savings - estimated by the San Francisco Federal Reserve as recently as May to still total close to half a trillion dollars - and with fixed-rate mortgages, many have been relatively immune to the Fed's 5 percentage-point credit squeeze to date.

Indeed, those with savings on deposit may be seeing significant offsetting windfalls too.

And the same may be true in the corporate word.

Societe Generale strategist Andrew Lapthorne details how different segments of the market have been hit by higher interest costs - small caps much more than large caps in particular.

For a start, he showed how the ratio of earnings to interest payments for the Russell 2000 small caps was just 2.5 times - compared with 13 times for the top 10% of the S&P1500 index.

Excluding financial firms, this 10% - accounting for more than 60% of index market cap - had seen no rise in interest payments so far in the Fed campaign and holds 70% of the cash.

And if overall U.S. corporate cash earned Fed interest rates, it would be generating almost $100 billion per annum extra in interest income compared to two years ago - a near 5% boost to overall earnings, skewed to the big caps.

"This simply means that interest rate effectiveness has been blunted," he concluded.

The opinions expressed here are those of the author, a columnist for Reuters

(by Mike Dolan, Twitter: @reutersMikeD.)