New Positions
2 managers initiated
Top five by reported value
Sound Group Inc NASDAQ NMS - GLOBAL MARKET:SOGP
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
2 new3 added8 reduced3 exited
Total Institutional Holders
13
as of 2025-12-31
Top Holder
SUSQUEHANNA INTERNATIONAL GROUP, LLP
$1.4M
Largest QoQ Increase
SUSQUEHANNA INTERNATIONAL GROUP, LLP
+49,600 sh
Largest QoQ Decrease
HRT FINANCIAL LP
-54,243 sh
New Positions(2)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| UMA Financial Services, Inc. | 48 | +48 | $558 | +$558 | — |
| SBI Securities Co., Ltd. | 11 | +11 | $128 | +$128 | — |
Added To(3)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MORGAN STANLEY | 27,562 | +22,192 | $320.3K | +$219.0K | 413.3% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 121,900 | +49,600 | $1.4M | +$53.6K | 68.6% |
| GROUP ONE TRADING, L.P. | 19,212 | +8,551 | $223.2K | +$22.3K | 80.2% |
Reduced(8)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | 99,817 | -17,662 | $1.2M | -$1.1M | -15.0% |
| RHUMBLINE ADVISERS | 2,257 | -265 | $26.2K | -$21.3K | -10.5% |
| BNP PARIBAS ARBITRAGE, SNC | 520 | -920 | $6.0K | -$21.1K | -63.9% |
| SIMPLEX TRADING, LLC | 814 | -9,238 | $9.5K | +$9.3K | -91.9% |
| JONES FINANCIAL COMPANIES LLLP | 850 | -50 | $9.9K | -$8.4K | -5.5% |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 100 | 0 | $1.2K | -$723 | 0.0% |
| UBS Group AG | 22 | -18 | $256 | -$498 | -45.0% |
| Federation des caisses Desjardins du Quebec | 3 | 0 | $35 | -$22 | 0.0% |
Sold Out(3)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| JANE STREET GROUP, LLC | 0 | -38,300 | $0 | -$722.0K | — |
| ADVISOR GROUP HOLDINGS, INC. | 0 | -250 | $0 | -$5.0K | — |
| HRT FINANCIAL LP | 0 | -54,243 | $0 | -$1.0K | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 121,900 | $1.4M | +49,600 | 68.6% |
| CITADEL ADVISORS LLC | 99,817 | $1.2M | -17,662 | -15.0% |
| MORGAN STANLEY | 27,562 | $320.3K | +22,192 | 413.3% |
| GROUP ONE TRADING, L.P. | 19,212 | $223.2K | +8,551 | 80.2% |
| RHUMBLINE ADVISERS | 2,257 | $26.2K | -265 | -10.5% |
| JONES FINANCIAL COMPANIES LLLP | 850 | $9.9K | -50 | -5.5% |
| SIMPLEX TRADING, LLC | 814 | $9.5K | -9,238 | -91.9% |
| BNP PARIBAS ARBITRAGE, SNC | 520 | $6.0K | -920 | -63.9% |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 100 | $1.2K | 0 | 0.0% |
| UMA Financial Services, Inc. | 48 | $558 | +48 | — |
| UBS Group AG | 22 | $256 | -18 | -45.0% |
| SBI Securities Co., Ltd. | 11 | $128 | +11 | — |
| Federation des caisses Desjardins du Quebec | 3 | $35 | 0 | 0.0% |
New & Closed Positions this quarter
Closed Positions
3 managers exited
Top five by prior-quarter value
- JANE STREET GROUP, LLC$722.0K
- ADVISOR GROUP HOLDINGS, INC.$5.0K
- HRT FINANCIAL LP$1.0K
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for SOGP against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.