Optiver Holding’s First Interstate BancSystem FIBK Stock Holding History

Optiver Holding’s Portfolio FIBK Stock Details FIBK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.44K	Sell	43 -136	-76%	-$4.86K	﹤0.01%	1976
2025 Q4	$6.19K	Buy	+179	New	+$5.86K	﹤0.01%	1277
2025 Q3	–	Sell	-283	Closed	-$8.16K	–	2757
2025 Q2	$8.16K	Buy	283 +42	+17%	+$1.13K	﹤0.01%	1057
2025 Q1	$6.91K	Buy	+241	New	+$7.47K	﹤0.01%	1005

Other funds holding FIBK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

FIB

First Interstate Bank Billings, Montana $1.78B AUM 13.62% 1-Year Est. Return

HAM

HoldCo Asset Management Fort Lauderdale, Florida $1.34B AUM 28.06% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Optiver Holding's FIBK Position: Q1 2026 in Review

Optiver Holding reduced its First Interstate BancSystem (FIBK) stake by 76% in Q1 2026, selling an estimated $4.86K and leaving 43 shares worth $1.44K. The position accounts for ﹤0.01% of the portfolio, ranked #1976.

Optiver Holding first reported a position in FIBK in Q1 2025 and has held it in 4 quarters since. The position peaked at $8.16K in Q2 2025. 287 funds tracked by Wall St. Rank hold FIBK as of Q1 2026.

Optiver Holding held 43 shares of First Interstate BancSystem worth $1.44K as of Q1 2026.
Optiver Holding sold 136 First Interstate BancSystem shares in Q1 2026, an estimated $4.86K.
First Interstate BancSystem made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #1976 holding.
Optiver Holding first reported a position in First Interstate BancSystem in Q1 2025 and has held it in 4 quarters since.
Optiver Holding's First Interstate BancSystem position peaked at $8.16K in Q2 2025.
287 funds tracked by Wall St. Rank held First Interstate BancSystem as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.