Investors / filer profile

Casdin Partners Master Fund, L.P.

active in 2 companies · 0 of 1 positions beat the S&P ~6mo later

Pro
Bought: Pro
Sold: 31
Filings: 2
Companies: 2026-05-21
Last filed

EDGAR · CIK 0001534265 ↗

Track record

How each disclosed position did against the S&P ~6 months later

The outcome curve and every position's resultPro →

-2.3%

median move per position

+6.4%

S&P 500 median, same spans

0 of 1

beat the S&P ~6mo later

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$16.30M bought · −$96.84M sold

All filings on record

Every Form 4 transaction we track for this filer


BLFSBIOLIFE SOLUTIONS INC	Sell $15.40M · 650,000 sh	2026-05-21	—
BLFSBIOLIFE SOLUTIONS INC	Sell $5.92M · 250,000 sh	2026-05-20	—
BLFSBIOLIFE SOLUTIONS INC	Sell $6.79M · 300,000 sh	2026-05-19	—
LABSTANDARD BIOTOOLS INC.	Buy $217.0K · 150,000 sh	2025-12-04	—
LABSTANDARD BIOTOOLS INC.	Buy $108.0K · 75,000 sh	2025-12-03	—
LABSTANDARD BIOTOOLS INC.	Buy $177.5K · 125,000 sh	2025-12-02	—
LABSTANDARD BIOTOOLS INC.	Buy $9.84M · 7,550,000 sh	2025-11-25	—
LABSTANDARD BIOTOOLS INC.	Buy $214.9K · 150,000 sh	2025-11-24	—
LABSTANDARD BIOTOOLS INC.	Buy $586.3K · 450,000 sh	2025-11-20	—
LABSTANDARD BIOTOOLS INC.	Buy $448.9K · 350,000 sh	2025-11-19	—

BLFSSell

2026-05-21 · BIOLIFE SOLUTIONS INC

$15.40M

—

BLFSSell

2026-05-20 · BIOLIFE SOLUTIONS INC

$5.92M

—

BLFSSell

2026-05-19 · BIOLIFE SOLUTIONS INC

$6.79M

—

LABBuy

2025-12-04 · STANDARD BIOTOOLS INC.

$217.0K

—

LABBuy

2025-12-03 · STANDARD BIOTOOLS INC.

$108.0K

—

LABBuy

2025-12-02 · STANDARD BIOTOOLS INC.

$177.5K

—

LABBuy

2025-11-25 · STANDARD BIOTOOLS INC.

$9.84M

—

LABBuy

2025-11-24 · STANDARD BIOTOOLS INC.

$214.9K

—

LABBuy

2025-11-20 · STANDARD BIOTOOLS INC.

$586.3K

—

LABBuy

2025-11-19 · STANDARD BIOTOOLS INC.

$448.9K

—

Newest 10 of 31 filingsEvery Form 4 on record, with outcomesPro →

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.