ORLANDO, Florida, Sept 17 (Reuters) - We're about to see

a rare phenomenon in global central banking: the U.S. Federal

Reserve is set to embark on an interest rate-cutting cycle just

as many of its peers are winding theirs down.

Strictly speaking, the Fed is resuming its easing cycle,

having paused last December after announcing 100 basis points of

cuts over the preceding three months.

Regardless, the world's most important central bank is about

to swim against the global tide, something investors haven't

seen for many years, especially when it comes to policy easing.

The rest of the world, therefore, may need to be prepared

for some choppy waters ahead.

There have been four large global easing cycles since the

euro's launch in 1999, including the current one. In the

previous three, the Fed was either one of the first big central

banks to move, as was the case in 2019, or among the most

aggressive rate cutters, as was the case in the dotcom bust.

But last year the Fed was relatively slow off the blocks, as

sticky inflation and solid growth meant it pulled the trigger

after most of its peers.

As a result, the Fed now finds itself playing catch up to

other monetary authorities, especially against the European

Central Bank and Bank of Canada, which have cut rates 200 and

225 bps in this cycle, respectively.

Rates futures markets are currently pricing in around 150

basis points of Fed rate cuts by the end of next year, far more

than is expected in the rest of the developed world. Traders

expect only another 40-60 bps over the same period from the BoE,

BOC, and Reserve Banks of Australia and New Zealand.

Meanwhile, the ECB and Swiss National Bank are thought to be

done, while the Bank of Japan is slowly raising rates, taking

its own unique path.

This policy divergence may create some problems beyond U.S.

shores.

EUR-EKA!

The most immediate and obvious market impact of the policy

divergence is being felt in FX markets, as the dollar is

weakening once again after a summer of relative stability.

Unforeseen - and unwanted - domestic currency strength could

complicate life for many central banks around the world.

Take the ECB. Officials are already expecting core inflation

to undershoot their 2% target, ending 2027 at 1.8%. Much of the

15% year-to-date euro/dollar rise will already be plugged into

their models, but probably not another jump higher in the

world's most important exchange rate.

The euro is already on track for its biggest annual rise

against the greenback since 2003. If currency strength and

tariff-sapped growth depress inflation even more, does that mean

the ECB will need to start cutting rates again?

Perhaps. But that would risk lowering the policy rate, which

is currently 2% and in the middle of the ECB's 1.75%-2.25%

neutral range, into stimulative territory, something influential

board member Isabel Schnabel has warned against.

By some measures the region's 'real' inflation-adjusted

interest rate is already below 'R-star', the long-run neutral

rate that neither accelerates nor slows growth. You can see why

Schnabel and others may be wary of further easing.

EUPHORIA?

And what about the impact on global equities?

Fed easing has historically been a tailwind for world

stocks, when looked at purely through the policy rate lens.

That's especially true when these rate cuts have been followed

by 'soft landings' - i.e., no recession - which stands to

reason.

The market already seems to be banking on this happening

again.

Increasingly dovish Fed expectations combined with 'soft

landing' hopes and optimism around artificial intelligence and

Big Tech have helped drive a global equity resurgence since

April. Many key indices have risen to new records, clocking

impressive double-digit gains along the way.

But how much of that is already 'in the price'? Some

analysts reckon there could be more room to go.

Strategists at Exane believe equities are only in the "early

stages" of an upswing that could culminate in "euphoria", and

are overweight Europe and Japan. Their counterparts at Citi are

"max long" equities on a global basis, with Europe replacing

emerging markets as the main overweight position.

The risk, of course, is that the Fed fails to meet the

market's aggressive easing expectations in the coming months,

prompting the dollar to snap higher, global financial conditions

to tighten, and a 'tactical' stock market correction to ensue,

not only in the U.S. but around the world.

Only time will tell, but what is clear is that markets are

entering unfamiliar territory. With many equity markets at

record highs, bond spreads at historic tights and key exchange

rates at levels not seen in years, investors should tread

carefully as this latest Fed easing cycle plays out.

(The opinions expressed here are those of the author, a

columnist for Reuters)