Ticker · CUSIP 45778Q107
Holders (tracked)
11
Combined shares
2,685,864
Combined value
$103.89M
Last close
$28.90
Quarter
2025Q4
Price · 1Y$28.90-45.04 (-60.92%)H $74.01 · L $19.90 · Avg Vol 838K
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
Price is -25.3% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
18 events
- Ken Griffin (Citadel Advisors) added2026-02-17+363,263 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−493,467 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+6,339 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+359,069 shares · 2025Q4Position
- D.E. Shaw & Co. added2026-02-17+272,960 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−97,844 shares · 2025Q4Position
- +26,210 shares · 2025Q4Position
- Renaissance Technologies trimmed2026-02-12−124,300 shares · 2025Q4Position
- Tom Gayner (Markel Group) added2026-02-06+21,145 shares · 2025Q4Position
- −129,609 shares · 2025Q3Position
- AQR Capital Management trimmed2025-11-14−79,730 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+142,587 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+403,679 shares · 2025Q3Position
- D.E. Shaw & Co. added2025-11-14+416,754 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+2,188 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+254,100 shares · 2025Q3Position
- Norges Bank (Norway SWF) exited2025-11-13−448,432 shares · 2025Q3Position
- Norges Bank (Norway SWF) added2025-11-12+14,135 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of NSP…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Ken Griffin (Citadel Advisors) | 2016Q3 | $39.11 | -26.1% | $526K |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $39.11 | -26.1% | $526K |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $39.11 | -26.1% | $526K |
| Ray Dalio (Bridgewater Associates) | 2022Q2 | $46.79 | -38.2% | $757K |
| D.E. Shaw & Co. | 2016Q1 | $48.92 | -40.9% | $26.0M |
| Renaissance Technologies | 2016Q1 | $50.57 | -42.9% | $4.0M |
| Two Sigma Investments | 2016Q1 | $51.47 | -43.8% | $10.8M |
| AQR Capital Management | 2016Q1 | $52.24 | -44.7% | $14.0M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $76.01 | -62.0% | $1.3M |
| Tom Gayner (Markel Group) | 2024Q1 | $80.10 | -63.9% | $4.4M |
| T. Rowe Price | 2016Q1 | $83.33 | -65.3% | $1.2M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions1
- Ray Dalio (Bridgewater Associates)+26,210$1.0M
Added to5
- Ken Griffin (Citadel Advisors)+363,263$14.1M
- AQR Capital Management+359,069$13.8M
- D.E. Shaw & Co.+272,960$10.6M
- Tom Gayner (Markel Group)+21,145$819K
- T. Rowe Price+6,339$245
Trimmed3
- Izzy Englander (Millennium Mgmt)−493,467$19.1M
- Renaissance Technologies−124,300$4.8M
- Two Sigma Investments−97,844$3.8M
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 13 | $32.57B |
| 2022Q2 | 13 | $32.31B |
| 2022Q3 | 12 | $712.6M |
| 2022Q4 | 11 | $844.6M |
| 2023Q1 | 12 | $920.4M |
| 2023Q2 | 12 | $870.9M |
| 2023Q3 | 12 | $685.1M |
| 2023Q4 | 11 | $781.6M |
| 2024Q1 | 12 | $732.9M |
| 2024Q2 | 15 | $590.9M |
| 2024Q3 | 11 | $97.2M |
| 2024Q4 | 11 | $98.3M |
| 2025Q1 | 10 | $85.8M |
| 2025Q2 | 12 | $104.0M |
| 2025Q3 | 10 | $115.6M |
| 2025Q4 | 11 | $103.9M |
Who owns NSP
11 super-investors · 2025Q4
Tracked stake
2.69M
shares
Combined value
$104M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added7Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | D.E. Shaw & Co. | 899.8K | $35M |
| 2 | Ken Griffin Citadel Advisors | 482.1K | $19M |
| 3 | AQR Capital Management | 483.1K | $19M |
| 4 | Two Sigma Investments | 373.0K | $14M |
| 5 | Tom Gayner Markel Group | 152.9K | $6M |
| 6 | Renaissance Technologies | 137.1K | $5M |
| 7 | Izzy Englander Millennium Mgmt | 46.3K | $2M |
| 8 | T. Rowe Price | 42.9K | $2M |
| 9 | Ray Dalio Bridgewater Associates | 26.2K | $1M |
| 10 | Ken Griffin Citadel Advisors | 24.2K | $937K |
| 11 | Ken Griffin Citadel Advisors | 18.2K | $705K |
Recent moves
20 transactions
- +359,069 · 2025Q4
- +363,263 · 2025Q4
- +272,960 · 2025Q4
- +6,339 · 2025Q4
- −493,467 · 2025Q4
- −97,844 · 2025Q4
- +26,210 · 2025Q4
- −124,300 · 2025Q4
- +21,145 · 2025Q4
- −129,609 · 2025Q3
- +2,188 · 2025Q3
- +416,754 · 2025Q3
- +142,587 · 2025Q3
- +403,679 · 2025Q3
- −79,730 · 2025Q3
- +254,100 · 2025Q3
- −448,432 · 2025Q3
- +14,135 · 2024Q3
- +73,298 · 2025Q2
- +57,687 · 2025Q2
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