FISERV INC 13F Institutional Holdings - Who Is Buying & Selling

Institutions

Combined AUM (Q2 2026)

$70.8M

Combined Shares (Q2 2026)

1.4M

Overall Trend

Increase

All institutions combined

Basis: holder count and combined value / shares merge all share classes of the same company (e.g. Class A / C); each institution is counted once, and value & shares are the sum across classes.

📥 Inflow (Q1 2026→Q2 2026)

+384,700

4 institutions added · 1 new buys

Est. buy amount ≈ —

📤 Outflow (Q1 2026→Q2 2026)

-83,900

1 institutions reduced · 0 exits

Est. sell amount ≈ —

⚖️ Net Share Change

+300,800

—

Net Buy

💰 Est. Net Value

≈ —

—

est. price —

	Portfolio %	Prev Q %	Rank	Q2 2026 Value	Q2 2026 Shares	Prev Q Value	Prev Q Shares	Shares Change	Action
IMC-Chicago, LLC	0.01%	0.01%	#2	$39.1M	797,500	$26.3M	472,000	+325,500+68.96%	Add
Optiver Holding B.V.	<0.01%	0.01%	#5	$17.7M	361,800	$24.9M	445,700	-83,900-18.82%	Reduce
SIMPLEX TRADING, LLC	<0.01%	<0.01%	#4	$8.1M	165,200	$7.1M	127,200	+38,000+29.87%	Add
GROUP ONE TRADING LLC	0.01%	0.01%	#3	$4.5M	92,600	$4.7M	84,700	+7,900+9.33%	Add
Maven Securities LTD	0.01%	0.01%	#1	$652,564	13,300	$742,074	13,300	00.00%	Unchanged
HRT FINANCIAL LP	<0.01%	—	#6	$652,365	13,300	$0	0	+13,300	New Buy

FISERV INC

🧭 Institutional Sector Flow Heatmap