RTB Digital
RTB
18 hedge funds and large institutions have $153K invested in RTB Digital in 2025 Q3 according to their latest regulatory filings, with 4 funds opening new positions, 3 increasing their positions, 4 reducing their positions, and 7 closing their positions.
0.02% less ownership
Funds ownership: 0.06% → 0.05% (-0.02%)
14% less funds holding
Funds holding: 21 → 18 (-3)
25% less repeat investments, than reductions
Existing positions increased: 3 | Existing positions reduced: 4
43% less first-time investments, than exits
New positions opened: 4 | Existing positions closed: 7
47% less capital invested
Capital invested by funds: $291K → $153K (-$138K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$59K |
| 2 |
Geode Capital Management
Boston,
Massachusetts
|
+$55.8K |
| 3 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$7.76K |
| 4 |
TSS
Two Sigma Securities
New York
|
+$5.26K |
| 5 |
Citigroup
New York
|
+$1.5K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$38.5K |
| 2 |
Renaissance Technologies
New York
|
-$23.2K |
| 3 |
CSI
Cross Staff Investments
Pittsford,
New York
|
-$21K |
| 4 |
Jane Street
New York
|
-$19.7K |
| 5 |
AIA
Allied Investment Advisors
Billings,
Montana
|
-$12.5K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
26
Royal Bank of Canada
Toronto,
Ontario, Canada
| – | -$25 | -2 | -40% |
|
|
GC
27
GFG Capital
Miami,
Florida
| – | -$26 | -1 | Closed |
|
|
TRCT
28
Tower Research Capital (TRC)
New York
| – | -$4 | – | – |
|
RTB Hedge Fund Activity: Q3 2025 in Review
18 of the 7,631 institutional investors tracked by Wall St. Rank reported a position in RTB Digital (RTB) for Q3 2025, worth a combined $153K — down 47% from $291K a quarter earlier.
Sellers outnumbered buyers: 7 funds closed out of RTB and 4 opened new positions — a net loss of 3 holders — while 4 trimmed existing stakes and 3 added.
The largest buyer was Vanguard Group, adding an estimated $59K. The largest seller was Citadel Advisors, exiting entirely with an estimated $38.5K sold.
- 18 institutional investors held RTB Digital (RTB) as of Q3 2025, down from 21 in Q2 2025.
- Funds reported $153K of RTB Digital stock for Q3 2025, down 47% quarter-over-quarter.
- 4 funds opened new RTB Digital positions in Q3 2025 and 7 closed out, a net change of -3 holders.
- The largest RTB Digital buyer in Q3 2025 was Vanguard Group, an estimated $59K added.
- The largest RTB Digital seller in Q3 2025 was Citadel Advisors, an estimated $38.5K sold.
Based on aggregated 13F filings for Q3 2025.