Calamos Advisors’s Nebius Group N.V. NBIS Stock Holding History

Calamos Advisors’s Portfolio NBIS Stock Details NBIS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q2	–	Sell	-49,000	Closed	-$3.14M	–	1014
2021 Q1	$3.14M	Buy	+49,000	New	+$3.28M	0.02%	628
2019 Q4	–	Sell	-54,500	Closed	-$1.91M	–	828
2019 Q3	$1.91M	Sell	54,500 -33,600	-38%	-$1.27M	0.01%	611
2019 Q2	$3.35M	Sell	88,100 -100	-0.1%	-$3.71K	0.02%	574
2019 Q1	$3.03M	Buy	+88,200	New	+$2.92M	0.02%	512
2018 Q4	–	Sell	-102,700	Closed	-$3.38M	–	726
2018 Q3	$3.38M	Sell	102,700 -31,300	-23%	-$1.06M	0.02%	524
2018 Q2	$4.81M	Buy	+134,000	New	+$4.67M	0.03%	447

Other funds holding NBIS

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

FAM

Fred Alger Management New York $22.8B AUM 64.63% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

AL4A

Accel Leaders 4 Associates Palo Alto, California $475M AUM 391.52% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Clear Street New York $24.6B AUM 56.26% 1-Year Est. Return

OAG

Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return

VARA

Value Aligned Research Advisors Princeton, New Jersey $20.7B AUM 292.88% 1-Year Est. Return

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

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Calamos Advisors's NBIS Position: Q4 2025 in Review

Calamos Advisors sold out of Nebius Group N.V. (NBIS) in Q4 2025, closing a stake of 38,467 shares — an estimated $4.32M sold.

Calamos Advisors first reported a position in NBIS in Q4 2013 and held it in 16 quarters. The position peaked at $12.2M in Q3 2016. 621 funds tracked by Wall St. Rank hold NBIS as of Q4 2025.

Calamos Advisors reported no remaining Nebius Group N.V. position as of Q4 2025 after selling out during the quarter.
Calamos Advisors sold 38,467 Nebius Group N.V. shares in Q4 2025, an estimated $4.32M.
Calamos Advisors first reported a position in Nebius Group N.V. in Q4 2013 and held it in 16 quarters.
Calamos Advisors's Nebius Group N.V. position peaked at $12.2M in Q3 2016.
621 funds tracked by Wall St. Rank held Nebius Group N.V. as of Q4 2025.

Based on Calamos Advisors's 13F filing for Q4 2025, filed 29 Jan 2026.