JY
MBCN

Jeff Yass’s Middlefield Banc Corp MBCN Stock Holding History

Jeff Yass’s Portfolio MBCN Stock Details MBCN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-10,529
Closed -$317K – 13273
2025
Q2 		$317K Sell
10,529
-950
-8% -$26.5K ﹤0.01% 10212
2025
Q1 		$321K Buy
+11,479
New +$300K ﹤0.01% 9920
2023
Q2 		– Sell
-50,768
Closed -$1.42M – 12706
2023
Q1 		$1.42M Buy
50,768
+40,215
+381% +$1.12M ﹤0.01% 5929
2022
Q4 		$289K Buy
+10,553
New +$302K ﹤0.01% 9182

Other funds holding MBCN

CCCPV
Castle Creek Capital Partners VI San Diego, California $55.9M AUM 7.91% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
EPCA
Elizabeth Park Capital Advisors Pepper Pike, Ohio $145M AUM 35.04% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return

Jeff Yass's MBCN Position: Q3 2025 in Review

Jeff Yass sold out of Middlefield Banc Corp (MBCN) in Q3 2025, closing a stake of 10,529 shares — an estimated $317K sold.

Jeff Yass first reported a position in MBCN in Q4 2022 and held it in 4 quarters. The position peaked at $1.42M in Q1 2023. 73 funds tracked by Wall St. Rank hold MBCN as of Q3 2025.

  • Jeff Yass reported no remaining Middlefield Banc Corp position as of Q3 2025 after selling out during the quarter.
  • Jeff Yass sold 10,529 Middlefield Banc Corp shares in Q3 2025, an estimated $317K.
  • Jeff Yass first reported a position in Middlefield Banc Corp in Q4 2022 and held it in 4 quarters.
  • Jeff Yass's Middlefield Banc Corp position peaked at $1.42M in Q1 2023.
  • 73 funds tracked by Wall St. Rank held Middlefield Banc Corp as of Q3 2025.

Based on Susquehanna International Group's 13F filing for Q3 2025, filed 14 Nov 2025.