Question 1

Does Two Sigma Investments own CALX stock?

Accepted Answer

Yes. As of its Q2 2026 13F, Two Sigma Investments holds 703,911 shares of CALX (Calix), worth $26.3M.

Question 2

How many shares of CALX does Two Sigma Investments own?

Accepted Answer

As of its Q2 2026 13F, Two Sigma Investments holds 703,911 shares of CALX (Calix).

Question 3

What is Two Sigma Investments' CALX position worth?

Accepted Answer

As of its Q2 2026 13F, Two Sigma Investments' CALX position is worth $26.3M.

Question 4

Is Two Sigma Investments buying or selling CALX?

Accepted Answer

In Q2 2026, Two Sigma Investments increased its CALX position from 161,455 to 703,911 shares.

Question 5

When did Two Sigma Investments first buy CALX?

Accepted Answer

Two Sigma Investments already held CALX in its Q4 2018 13F, the earliest on record, and has listed it in 29 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	703,911	+336.0%	$26.3M	0.0%	$37.32	46
2026-Q1	Increased	161,455	+725.2%	$7.9M	0.0%	$48.99	44
2025-Q4	Increased	19,565	+7.1%	$1M	0.0%	$52.93	27
2025-Q3	Decreased	18,265	-26.3%	$1.1M	0.0%	$61.37	0
2025-Q2	Increased	24,789	+37.0%	$1.3M	0.0%	$53.19	33
2025-Q1	Decreased	18,089	-39.7%	$641,074	0.0%	$35.44	0
2024-Q4	Increased	29,994	+31.0%	$1M	0.0%	$34.87	32
2024-Q3	Decreased	22,894	-51.0%	$888,058	0.0%	$38.79	0