Ruane Cunniff
Ruane, Cunniff & Goldfarb L.P.
Bill Ruane and Rick Cunniff started the firm in 1969 in the belief that they could outperform the stock market by investing in great businesses selling at reasonable prices and staying with them as long as they remained attractive. By doing exhaustive primary research, ignoring fads and sticking to their principles, the firm has built an enviable track record. William Ruane was a Graham-and-Doddsville superinvestor recognized by Warren Buffett. He was a student of Benjamin Graham, and attended his class at the same time as Warren Buffett.
Stock Trading
All
Buys
Sells
No.
Name
Action
Shares Traded
% Change
Shares Held
Mkt Value (Date)
Report Date
Watchlist
Rolls Royce Holdings ADR (US)
RYCEY
Sell
-14.72M
-21.40%
39.39M
$682.67M
2026-03-31
Zoetis Inc (US)
ZTS
Buy
+2.43M
+67.50%
3.59M
$285.42M
2026-03-31
SUNB.NB (US)
SUNB
Buy
+2.19M
+48.50%
4.52M
$357.23M
2026-03-31
4
Bio-Techne Corp (US)
TECH
Buy
+1.93M
+52.30%
3.68M
$176.94M
2026-03-31
5
Liberty Broadband Corp (US)
LBRDK
Sell
-1.11M
-26.10%
2.03M
$69.78M
2026-03-31
6
Charles Schwab Corp (US)
SCHW
Sell
-880.17K
-12.70%
5.16M
$441.51M
2026-03-31
7
Amentum Holdings Inc (US)
AMTM
Sell
-771.15K
-22.90%
1.83M
$42.33M
2026-03-31
8
SAP SE (US)
SAP
Buy
+703.98K
+57.00%
1.24M
$215.09M
2026-03-31
9
Credit Acceptance Corp (US)
CACC
Sell
-389.93K
-43.70%
112.00K
$61.91M
2026-03-31
10
Alphabet Inc Class A (US)
GOOGL
Sell
-249.14K
-9.00%
2.27M
$882.25M
2026-03-31


