App Economy Insights — How to Invest in IPOs (Jun 2026)

One-line take: An education piece (not stock advice). With SpaceX's record IPO (+50% in three days) and Anthropic/OpenAI filing confidentially, four decades of data point to a boring answer: probably don't jump in. The pop mirage — the offering price and the opening price are different numbers; the first-day pop goes to whoever got an allocation, not most public investors (Rivian +70% to its peak, now down 80%+; Cerebras +68% day one, ~30% off a month later). Jay Ritter's dataset: over five years from the first-day close, 50% of IPOs were negative, 30% lost half or more, only 24% became multi-baggers. The five-rule playbook: avoid the hype, wait for the second earnings call, nibble in year one, anchor to valuation, give it time. Bottom line: the 2026 IPO wave is a readout of how hot the market is, not a buy signal — SpaceX, OpenAI and Anthropic belong on the watch list, not the impulse-buy list. Single names below are referenced/neutral illustrations.

1. Stocks & names mentioned

Ticker	Name	Research	View	What's said	Source
SPCX	SpaceX	QT · SA · STK · FA	Neutral	The framing IPO — priced at a fixed $135 (June 12), surged 50%+ in three days, briefly ~$2.6T. Tried to be fairer (skipped book-building, reserved 30% for individuals) but ran up so fast it left "less room for error." Framed watch-list, not impulse-buy.	article ↗
RIVN	Rivian	QT · SA · STK · FA	Neutral	The pop-mirage poster child — priced $78, closed day one at $101, hit $172 a week later (+70%, briefly third-most-valuable automaker ahead of Ford and GM) — that was the peak. Down 80%+ from the first-day close, ~$16 today.	article ↗
CBRS	Cerebras Systems	QT · SA · STK · FA	Neutral	Second illustration — priced $185, closed day one at $311 (+68%); a month later ~30% off its peak. The same first-day-pop-then-fade pattern.	article ↗
F	Ford Motor	QT · SA · STK · FA	Neutral	Passing benchmark — Rivian briefly passed Ford and GM in market value at its post-IPO peak, illustrating how euphoric first-week pricing can be.	article ↗
GM	General Motors	QT · SA · STK · FA	Neutral	Passing benchmark — cited with Ford as the established automaker Rivian leapfrogged on valuation at its IPO peak (before falling 80%+).	article ↗
Anthropic	Anthropic	—	Neutral	Watch-list, not impulse-buy — filed confidentially; may become a defining franchise, but owning it on day one at peak-euphoria valuations before a single public quarter is a weak case. Let it report, let insiders sell, let expectations move from story to numbers.	article ↗
OpenAI	OpenAI	—	Neutral	Watch-list, not impulse-buy — filed confidentially alongside Anthropic; same caution: none of the three mega-IPOs is profitable, and unprofitable issuers historically underperform the most. Put it on the watch list and wait for public-market data.	article ↗

"View" here is referenced/neutral — this is an educational framework, and the single names are illustrations, not recommendations. Research: QT Qualtrim · SA Seeking Alpha · STK Stock Analysis. The "Source" links open the newsletter (no per-name timestamps — it's a written post).

2. Talking points

The IPO pop mirage

The offering price and the opening price are two different numbers; individual investors usually pay the second, and the first-day pop accrues to whoever got an allocation — not the business or most public investors.
Rivian +70% to its first-week peak (briefly above Ford and GM), now down 80%+; Cerebras +68% day one, ~30% off a month later; SpaceX tried to be fairer but still rose 50%+ in three days.

What 40 years of data say

Three built-in disadvantages: limited operating history (the S-1 is the past), insider selling (lock-ups expire ~6 months), and an information edge for those who saw the company earlier and cheaper.
Jay Ritter's (University of Florida) dataset — operating-company IPOs with ≥$100M sales, from first-day close, five years: 50% negative, 30% lost half or more, only 24% multi-baggers. Worst relative performance is 6–24 months in (around lock-up expiry).
3-year patterns: bigger is safer (under $100M sales trailed ~34% vs ~4% for over $500M); profitable issuers underperformed ~13% vs ~31% unprofitable (none of the mega-IPOs are profitable); VC-backed trailed ~14% vs ~25%.

The five-rule IPO playbook

(1) Avoid the IPO hype — let the early volatility pass. (2) Wait for the second earnings call — two quarters draw a trendline the S-1 can't. (3) Nibble in year one — a starter so small a 50% drawdown won't hurt. (4) Anchor to valuation — missing a 20% move beats buying perfection. (5) Give it time — multi-baggers rarely require buying on day one.
Buffett's framing: "It isn't worth spending five seconds thinking about IPOs" — sellers choose the timing.

SpaceX, OpenAI, or Anthropic?

None has shown how it behaves under public-market pressure; valuations price perfection before a single public quarter. Better move: watch list — let them report, let insiders sell, let the story turn into numbers.
Bottom line: the 2026 IPO wave is a readout of how hot the market is, not a buy signal.

3. In plain English

A jargon-free summary of the framework as it applies to each name. (Plain-language companion to the table above; renders on each ticker's consolidated page.)

SPCX — SpaceX Neutral

SpaceX just had the biggest stock-market debut ever. Unlike a typical IPO — where banks quietly hand cheap shares to favored clients who flip them for an instant profit ("book-building") — SpaceX tried to play fair: it set one fixed price ($135) and set aside an unusual 30% of shares for ordinary investors. Good intentions, but the stock still jumped more than 50% in three days.

The article's caution: even a "fairer" IPO that runs up that fast leaves very little margin for error — you're paying a price that already assumes years of flawless execution. So rather than chase it on day three, the author would put SpaceX on a watch list and wait for it to report a few quarters as a public company before deciding. It's not a sell call; it's "don't buy the fireworks."

RIVN — Rivian Neutral

Rivian is the cautionary picture the whole piece is built around. When the electric-truck maker went public it priced at $78, opened higher, and within a week hit $172 — briefly making it worth more than Ford or General Motors despite selling a tiny fraction of the cars. That was the top. The stock has since fallen more than 80% from that first-day close and trades around $16.

The lesson isn't "Rivian is bad" — it's that the exciting first-week price is usually the most expensive the stock will ever be, because it's pure hype before the company has proven anything as a public business. Anyone who bought the euphoria got crushed; anyone who waited got a far better price.

Anthropic — Anthropic Neutral

Anthropic (maker of the Claude AI models) has filed confidentially to go public and could be one of the most valuable IPOs in history. The article's advice is the same discipline it applies to every hot new issue: put it on a watch list rather than buying on day one.

The reason is statistical. Over 40 years, IPOs as a group underperform — and the worst odds belong to companies that are large and not yet profitable, which describes Anthropic exactly. Day-one buyers pay a price set at peak excitement, before the company has reported a single public quarter and before insiders are allowed to sell. Waiting lets the hype drain, lets the lock-ups expire, and lets the story be replaced by actual numbers — a much safer entry if it really is a future giant.

OpenAI — OpenAI Neutral

OpenAI (maker of ChatGPT) has also filed confidentially to go public. It gets the identical treatment in this piece: a likely watch-list name, not a day-one buy. It's huge, unprofitable, and arriving at a euphoric valuation — the exact profile the data says tends to disappoint early buyers.

The practical move the author suggests is to let it list, let the first wave of enthusiasm fade, wait for at least the second earnings report, and only then consider a small starter position anchored to a sensible valuation. Missing the first 20% is fine; overpaying for perfection is the real risk.

Key points & figures extracted from the public App Economy Insights newsletter (in transcript.txt) for personal study. Not investment advice. © App Economy Insights for source material.