Wall Street just had one of its best days of the year.
The Dow Jones Industrial Average surged 702 points — or 1.4% — on Monday, hitting a fresh all-time intraday high as investors cheered the US-Iran peace deal and tumbling oil prices.
The Numbers at a Glance
| Index | Monday Move |
|---|---|
| Dow Jones Industrial Average | +702 points (+1.4%) |
| S&P 500 | +1.9% |
| Nasdaq Composite | +3.0% |
The rally was broad-based and decisive. This was not a single-stock story — the entire market moved higher.
What Triggered the Surge
Late Sunday, US President Donald Trump announced on social media that a deal with Iran was "now complete."
The memorandum of understanding has already been signed electronically, according to a senior administration official. A formal signing ceremony is scheduled for Friday in Switzerland, confirmed by Pakistan Prime Minister Shehbaz Sharif.
Trump also authorised the reopening of the Strait of Hormuz — the critical oil shipping lane effectively shut since late February.
On Monday, Vice President JD Vance told CNBC that he expects the strait to be "opened in a toll-free way for the long term" — a statement that added further confidence to the rally.
Oil Drops. Rates Fears Fade.
US crude fell 5% to around $80 per barrel on the news.
That move matters far beyond the energy sector. Brian Mulberry, chief market strategist at Zacks Investment Management, called it a watershed signal.
"It seems real this time as both rates and oil have broken through key levels," he told CNBC.
He added that crude falling to $80 is "a strong signal, given that this is an FOMC week, that we don't need to raise rates and that the price pressure should alleviate relatively quickly."
Markets are listening. Fed funds futures now show a greater than 98% probability that interest rates will end the year unchanged, according to CME's FedWatch tool.
Just last week, two rate hikes by early 2027 were being priced in. That scenario has now largely been wiped off the table.
SpaceX Adds Fuel to the Fire
The Iran deal was not the only story moving markets.
SpaceX shares jumped more than 10% on Monday, extending Friday's explosive 19% gain from its public market debut.
Mulberry said the SpaceX rally has been "much more orderly" than expected. "This is not some type of a meme stock right out of the gate — it actually is people adding it and holding it in their portfolio, not trying to turn it over."
That kind of institutional buying behaviour signals genuine long-term conviction, not speculative froth.
One Cloud on the Horizon
The rally came despite a last-minute scare on Sunday.
An exchange of fire between Israel and Tehran-backed Hezbollah in Lebanon briefly raised doubts over whether the peace agreement would survive the weekend. It did — but the episode is a reminder of how fragile the framework remains.
Mulberry noted that refined products like jet fuel will take "a little bit longer" to come down in price, even as crude drops. Supply chains and refining capacity do not adjust overnight.
What This Means for Investors
A record Dow, falling oil, and near-zero probability of a rate hike is a powerful combination for equity markets.
For long-term investors, this is the kind of macro shift that can reset return expectations for the rest of the year. Lower rates mean cheaper borrowing, higher consumer spending, and stronger corporate earnings growth.
For those looking to understand how to position around a market like this, our guides on S&P 500 investing and passive investing for beginners are a solid starting point.
If you are wondering whether now is the time to put money to work, our piece on what the smartest thing to do with $100,000 is also walks through the key considerations in a shifting rate environment.
Sources: CNBC markets desk; CME FedWatch Tool; analyst commentary from Zacks Investment Management.
Reported by the WealthBlueprint NewsDesk | June 15, 2026