Skip to content
stock.ceo

REGN

Regeneron Pharmaceuticals, Inc.

Industry
Unclassified
Exchange
NASDAQ
Leaders covered
1
Market data
1992–2025

Founder

Leonard S. Schleifer

1988 – present

2026 reading

Firm

1 signal, 0 drags

Strong 2 of 3 · Firm 3 of 6 · Even 12 of 18 · Soft 3 of 3 · Weak 1 of 1 rose

A reading is odds, not a call. Years at each level that rose, all leaders, 1995–2025: Strong 79% · Firm 70% · Even 67% · Soft 54% · Weak 53%.

Leonard S. Schleifer at REGN, by year
YearReadingStackedREGNResult
2025Weak0 signals, 1 drag+9.0%Rose
2024Firm1 signal, 0 drags−18.9%Fell
2023Even0 signals, 0 drags+21.7%Rose
2022Soft0 signals, 1 drag+14.3%Rose
2021Even0 signals, 0 drags+30.7%Rose
2020Firm1 signal, 0 drags+28.7%Rose
2019Even0 signals, 0 drags+0.5%Rose
2018Even0 signals, 0 drags−0.6%Fell
2017Strong2 signals, 0 drags+2.4%Rose
2016Even1 signal, 1 drag−32.4%Fell
2015Even0 signals, 0 drags+32.3%Rose
2014Even0 signals, 0 drags+49.1%Rose
2013Soft0 signals, 1 drag+60.9%Rose
2012Even0 signals, 0 drags+208.6%Rose
2011Even0 signals, 0 drags+68.8%Rose
2010Soft0 signals, 1 drag+35.8%Rose
2009Even0 signals, 0 drags+31.7%Rose
2008Firm1 signal, 0 drags−24.0%Fell
2007Even1 signal, 1 drag+20.3%Rose
2006Strong2 signals, 0 drags+26.2%Rose
2005Even0 signals, 0 drags+72.6%Rose
2004Even0 signals, 0 drags−37.4%Fell
2003Firm1 signal, 0 drags−20.5%Fell
2002Strong2 signals, 0 drags−34.3%Fell
2001Even1 signal, 1 drag−20.1%Fell
2000Firm1 signal, 0 drags+176.6%Rose
1999Even0 signals, 0 drags+72.9%Rose
1998Even0 signals, 0 drags−13.9%Fell
1997Even0 signals, 0 drags−46.9%Fell
1996Firm1 signal, 0 drags+26.5%Rose
1995Even0 signals, 1 drag+325.0%Rose

Returns are the calendar-year change in REGN's adjusted close from EODHD, the series the record was scored on.

Readings
One of five levels a year, with how many signals and drags stacked, computed from the birth date over the thirteen possible birth hours and issued only where at least ten agree. Built 2026-11-03 from research export f165a33. The rules stay in-house.
Stock data
Calendar-year and monthly % change of adjusted close. Volatility % = annualised stdev of the 12 monthly returns. No prices are included. Adjusted close is split-adjusted, so a stock split never appears as a move in anything plotted here, and stock splits are not recorded as events.
Birth dates
197 of the 315 people in this dataset now have at least one source recorded here, across 198 of the 321 leader-company records — six people ran two companies and are stored once for each. Of those sources — all 198 of them — 195 are a stated age read out of an SEC proxy statement, which bounds a birth year and says nothing about the day; one is an age stated in a press report; two state the day itself, one from an official gazette read by a person and one from an encyclopedia. The day is what every reading on this site is calculated from, so for all but those two birth dates no source here backs the part that is used. The 195 records the pass produced were not reviewed by a person: each source names who read it. Six findings from the same pass are deliberately not entered, because in each one the date held here falls outside the bound the filing implies, and telling an ordinary record-date lag from a real disagreement needs a person rather than arithmetic. An absent entry still means no source is recorded here yet.
Research export
Version 2, generated 2026-11-03 from research commit 7d490ef with uncommitted changes

Research and exploration only. Not investment advice. A reading describes a leader's year from their birth date, not the stock.