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BAND in the 13F filings

Bandwidth Inc · CUSIP 05988J103

Sector · Software and IT servicesTheme · Cloud and enterprise software· L3VLUP-definedTheme · Prepackaged software
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
28
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed
8,311,389
combined, among listed positions
Reported value
$521m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,974,064.

Managers listing BAND in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

28 of 28 holders

ActionFiling
D. E. Shaw & Co.1,311,050$83munder 0.1%Added+961,19014 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP911,893$58munder 0.1%Added+530,18214 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP824,923$52munder 0.1%Added+330,99114 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP794,130$50munder 0.1%Added+105,70013 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC792,132$50m0.06%Trimmed-40,55613 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC720,419$46munder 0.1%Added+630,57214 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC644,000$41m0.06%Trimmed-98113 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)544,221$34munder 0.1%Added+20,13313 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC382,961$24munder 0.1%Added+162,1122 Sep 2026 (the filing on sec.gov)
AQR Capital Management LLC381,122$24munder 0.1%Trimmed-62,47014 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP192,082$12munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP187,280$12munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP90,871$5.8munder 0.1%Added+30,62914 Aug 2026 (the filing on sec.gov)
Millennium Management LLC78,961$5.0munder 0.1%Added+51,13914 Aug 2026 (the filing on sec.gov)
Voloridge Investment Management LLC72,180$4.6munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC60,478$3.8munder 0.1%Newnew27 Oct 2026 (the filing on sec.gov)
Tudor Investment Corp51,722$3.3munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Invesco Ltd49,050$3.1munder 0.1%Trimmed-19,02814 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc39,768$2.5munder 0.1%Added+2,71714 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP113,012$2.0munder 0.1%Trimmed-101,68014 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC16,861$1.1munder 0.1%Trimmed-28,40514 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC13,376$847kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Caxton Associates LLP10,730$679kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Element Capital Management LLC10,035$635kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Walleye Capital LLC9,286$588kunder 0.1%Trimmed-50,7113 Aug 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (11)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
3 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

035810201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
BAND by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20171$12mn.a.n.a.
Q1 20181$18mn.a.n.a.
Q2 20182$24mn.a.n.a.
Q3 20185$34mn.a.n.a.
Q4 20185$36mn.a.n.a.
Q1 20195$76mn.a.n.a.
Q2 20196$148mn.a.n.a.
Q3 20194$142mn.a.n.a.
Q4 20195$176mn.a.n.a.
Q1 202010$324mn.a.n.a.
Q2 20208$470mn.a.n.a.
Q3 20209$531mn.a.n.a.
Q4 20208$491mn.a.n.a.
Q1 202110$297mn.a.n.a.
Q2 20219$305mn.a.n.a.
Q3 202110$294mn.a.n.a.
Q4 20218$269mn.a.n.a.
Q1 20228$114mn.a.n.a.
Q2 20223$35mn.a.n.a.
Q3 20223$20mn.a.n.a.
Q4 20222$27mn.a.n.a.
Q1 20232$5.0mn.a.n.a.
Q2 20232$6.1mn.a.n.a.
Q3 20232$4.8mn.a.n.a.
Q4 20232$4.7m02
Q1 20242$6.6m11
Q2 20242$11m20
Q3 20243$16m21
Q4 20243$15m03
Q1 20251$10.0m02
Q2 20251$12m01
Q3 20251$13m10
Q4 20251$12m119
Q1 20261$15m165
Q2 20264$92m2110

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

BAND and GOOGL →BAND and AMZN →BAND and MSFT →Choose a stock to compare with BAND →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own BAND, latest filings →Back to the 13F Explorer →