Why has the S&P 500's (Index: SPX) amplification factor turned negative after more than a decade of being virtually constant?

It didn't happen all at once. It has happened in stages, coinciding with significant changes in the Federal Reserve's monetary policies in response to the coronavirus recession. Those actions have created today's upside down market environment, where stock prices keep rising even though market fundamentals, the things that typically drive changes in stock prices, have been crashing.

The trading week ending on 15 May 2020 provided some insight into why that is, which saw the trajectory of the S&P 500 nearly break out of the redzone forecast range we've been tracking on the alternative futures forecast chart.

The near breakout took place from Tuesday, 12 May 2020 through Thursday, 14 May 2020, where the first two days of that period saw an unusual amount of activity by Fed officials seeking to put the kibosh on expectations the central bank would adopt negative interest rates in the U.S. Stock prices fell on the weight of those expectations, as value of m, the amplification factor in the dividend futures-based model we use to forecast the S&P 500, became slightly less negative.

On Thursday, bond market vigilantes staged a rebellion against the Fed, increasing their bets the central bank will be forced to adopt the policy, with the result of stock prices rising and the value of m drifting back toward a value of -1.

The response of stock prices to this interest rate policy-related stream of new information has been informative, because it gives the basis for a new hypothesis for why the world seems to have turned upside for U.S. stock prices. Increased expectations the Fed will adopt negative interest rates could explain why the sign of the amplification factor has become negative, where we could soon get a test of this new hypothesis, thanks to Federal Reserve Chair Jerome Powell's 60 Minutes interview on Sunday, 17 May 2020. Here's an extended excerpt from the transcript of the interview:

PELLEY: In the early days of the crisis in this boardroom, you and the committee lowered interest rates essentially to zero. Would you lower them further into negative territory, which the president has suggested is a good idea?

POWELL: So around this table during the last crisis and during the recovery, we looked at negative interest rates. And it's something we decided not to do. We used other tools instead. And those tools involved forward guidance about the federal funds rate and also lots of asset purchases or quantitative easing as it's often referred to.

I continue to think, and my colleagues on the Federal Open Market Committee continue to think that negative interest rates is probably not an appropriate or useful policy for us here in the United States.

PELLEY: And why not? The President seems to think it would help.

POWELL: The evidence on whether it helps is quite mixed. And the issue is people would be depositing money in the bank and that money would be shrinking. They'd be paying interest to put their money in the bank. So it's not a particularly popular policy, as you can imagine.

But in addition, it can also tend to depress the profitability of banks, which makes them likely to lend less, which weighs on economic growth. So I would just say it's not at all settled in, you know, in economic analysis that negative rates really add much value.

PELLEY: I think the idea of negative interest rates is something that a lot of people have a difficult time getting their head around. Would you explain it to me?

POWELL: Well, rather than being paid interest on your cash, you pay interest to the bank -- or if you borrow money, they pay you to borrow money. And if you lend them money by putting it in a bank, then they pay you money.

PELLEY: So the banks would pay people to borrow money, essentially?

POWELL: Yes.

PELLEY: And that would conceivably cause more business and commerce to happen?

POWELL: It would. But, you know, this has been tried. We have negative policy rates in many countries around the world as a result of the financial crisis. And there's no clear finding that it actually does support economic activity on net. And it introduces distortions into the financial system, which I think offset that.

There're plenty of people who think negative interest rates are a good policy. But we don't really think so at the Federal Reserve. And I think it's an area of real uncertainty in the central banking world.

Today's upside down stock market may be an example of the kind of distortions that Powell is describing. And yet, when you consider how many Americans have investments in the stock market through their retirement accounts or through pension funds, a collapse in stock prices that might result if the prospect of negative rates is completely taken off the table could be devastating, not just for the stock market but for the economy, because it could trigger a new wave of contraction. It's not likely that many people would consider that kind of potential outcome to be a good thing.

That's a very fine line to try to walk, where we don't envy Fed Chair Powell. It is far easier for a Fed chief to follow the market than it is to lead it, because the latter puts the Fed's credibility on the line, which has larger consequences. The first test of how effectively he made his case against negative rates could come in this upcoming week, where it will add to the endless, random onset of new information for investors to consider.

Meanwhile, here are the market-moving headlines we noted during the week that was.

Monday, 11 May 2020

• Daily signs and portents for the U.S. economy:
• Oil falls on fears of second coronavirus wave
• U.S. has no need to buy back debt, will take advantage of low interest rates: Mnuchin
• Bigger trouble developing in China, but auto sales stop falling:
• China's factory deflation deepens as pandemic hits demand
• Chinese advisers call for talks on new trade deal with U.S.: Global Times
• Boeing CEO sees passenger levels under 25% in September, pain for airlines: NBC interview
• As U.S. meat workers fall sick and supplies dwindle, exports to China soar
• China car sales mark first rise in 22 months, but virus to still slam 2020
• Fed policymakers are negative on negative rates
• Fed's Evans sees no inflation risk, and no use for negative rates
• Fed's Bostic: 'Not a big fan' of negative interest rates
• Fed's Quarles says U.S. banks, Fed may need to do more in crisis
• S&P 500 closes barely higher as investors balance pandemic with recovery

Tuesday, 12 May 2020

• Coronavirus pandemic continues weighing on U.S. economy:
• Oil rises as OPEC looks to deepen, extend supply cuts
• Coronavirus crisis leads to largest U.S. consumer price decline since 2008
• Premature end to U.S. state lockdowns could cause needless death, Fauci tells senators
• Bigger stimulus under negotiation in U.S.:
• U.S. House Democrats float $3 trillion coronavirus bill, Republicans reject it
• U.S. Senate leader says will only consider narrow coronavirus bill
• White House waiting on reopening data before deciding on next coronavirus aid: Hassett
• Fed minions unleashed:
• Fed's Mester says virus testing and treatments needed for economy to recover in 2nd half
• Fed's Quarles defends decision to let banks maintain dividends
• Fed's Harker says opening economy too soon risks second wave of coronavirus
• Barkin: 'Little bit of money' from new facilities could keep corporate markets settled
• Fed's Kashkari: 'We might be in this for a long time'
• Bullard: Credit facilities, including ETF purchases begun today, already helping
• Once taboo, investors begin to imagine negative U.S. rates
• Fed's Kaplan says he opposes using negative interest rates
• Trump again urges Fed to adopt negative U.S. interest rates
• Trump 'not interested' in reopening U.S.-China trade deal after report of Beijing discontent
• China working to fulfil pledge on U.S. purchases despite import slowdown: sources
• S&P 500 tumbles on fears of virus resurgence in economic reopening

Wednesday, 13 May 2020

• Oil falls 3% despite surprise U.S. crude stock drawdown
• Bigger trouble developing all over:
• Collapse in consumption dragging down global economic outlook: IMF
• Euro zone industry output suffers deepest monthly fall on record
• Fed minion deflates expectations for monetary policy, thinks Congress can help:
• Fed Chair Powell warns of prolonged U.S. recession after coronavirus
• In nod to grim U.S. outlook, Fed's Powell calls for more fiscal support
• Powell: Fed not looking at negative rates
• Fed chief has no time to worry about U.S. debt during wartime
• ECB minion says Eurozone has hit bottom; German leader calls for subservient relationship to ECB:
• ECB's de Guindos says euro zone economy has already bottomed out
• With economic integration pledge, Merkel seeks to defuse ECB time-bomb
• Fed chief has no time to worry about U.S. debt during wartime
• Wall Street ends down on Powell's sober outlook, call to Congress for help

Thursday, 14 May 2020

• Daily signs and portents for the U.S. economy:
• Oil prices rise on dip in U.S. crude stockpiles and IEA data
• Lower-income workers hit harder by coronavirus job losses, Fed survey finds
• Trump threatens new taxes on companies that make goods outside United States
• China likely to speed up buying of U.S. farm goods: COFCO exec
• Bigger trouble developing in China:
• China faces increasing downward pressure on foreign trade this year: commerce ministry
• Demanding accounting standards could push Chinese companies out of U.S. exchanges: Trump
• Bigger stimulus in negotiation all over:
• China needs more active fiscal policy as pressure on economy increasing: People's Daily
• IMF head says Germany could do more to stabilise Europe: Handelsblatt
• Germany plans fiscal splurge despite plunging tax revenues
• Trump is open to more coronavirus stimulus, but not Democrats' plan: White House
• BOJ's Kuroda sees no need to deepen negative rates now to fight pandemic
• Fed minions say monetary policies only go so far, call for Congress to act:
• Seven weeks into coronavirus lockdowns, Fed has a new, darker message
• Fed corporate bond program starts with a fizzle as total assets near $7 trln
• Fed's credit operation launched, but job already done
• Fed's Kashkari: U.S. Congress needs to put 'money in pockets'
• Trump rips into China over coronavirus, 'very disappointed'
• Trump says he doesn't want to talk to Xi right now, could even cut China ties
• Wall Street closes with strong gains as recovery hopes offset pandemic fears

Friday, 15 May 2020

• Daily signs and portents for the U.S. economy:
• Coronavirus boosts U.S. layoffs; job openings fall
• Take Five: ZIRP to NIRP, a jump policymakers must consider
• Oil prices jump as demand shows signs of picking up
• Bigger trouble still developing all over:
• Coronavirus could inflict $8.8 trillion in global losses: ADB
• Euro zone first-quarter growth plunge deepest on record as coronavirus hits
• As China reopens, factories fire up but jobs gloom keeps consumers at home
• Bigger stimulus developing in the U.S. and the Eurozone:
• White House's Kudlow floats cutting U.S. corporate tax rate in half
• As euro zone recession deepens, ECB to scale up bond buying next month
• After coronabonds, EU heads for clash over "corona" tax in next budget
• House passes $3 trillion coronavirus aid bill opposed by Trump
• House Republican backs use of tax incentives to pull companies to U.S. from China
• Taiwan's TSMC to build Arizona chip plant as U.S.-China tech rivalry escalates
• Wall Street ends up after swings on reopening hopes, weak data, trade woes

Elsewhere, Barry Ritholtz has scanned the week's markets and economy-related news and divided it up into the categories of positives and negatives.

The S&P 500 The Day After The Money Printer Went BRRR

Update 18 May 2020, 6:30 PM Eastern: The S&P 500 (Index: SPX) surged 3.15% to close at 2,953.91, following Fed Chair Powell's promise to 'digitally' print more dollars, the long-awaited announcement of a non-token fiscal stimulus effort from EU governments, and some early promising vaccine test results.

In addition to the surge in stock prices, dividends futures for 2020-Q3 also bounced up - at least during intraday trading, as shown in the first chart below:

Or as some wag with a YouTube account visually expressed it:

Stock prices don't levitate themselves! Yet, the question of how long the Fed can keep the gravity-defying levitation going remains open....