Ticker · CUSIP 254067101
Holders (tracked)
10
Combined shares
396,765
Combined value
$239.10M
Last close
$592.73
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
Price is -1.6% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
19 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−4,649 shares · 2025Q413F
- T. Rowe Price added2026-02-17+97 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−36 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−13,552 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−19,850 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+21,800 shares · 2025Q413F
- AQR Capital Management added2026-02-17+12,863 shares · 2025Q413F
- Ray Dalio (Bridgewater Associates) added2026-02-13+3,626 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−24,320 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+60,359 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+8,973 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+19,299 shares · 2025Q313F
- T. Rowe Price added2025-11-14+174 shares · 2025Q313F
- Wellington Management opened position2025-11-14+953 shares · 2025Q313F
- AQR Capital Management added2025-11-14+12,699 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−5,087 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+14,900 shares · 2025Q313F
- +6,089 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−24,503 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
1
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-14 | Worley Dean L. VP/GENERAL COUNSEL & SECRETARY · Insider | G | 100 | — | $0 |
Follow-the-investor returns
If you'd copied each holder of DDS…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $68.82 | +761.3% | $1.4M |
| Wellington Management | 2016Q3 | $134.13 | +341.9% | $544K |
| Renaissance Technologies | 2016Q1 | $294.33 | +101.4% | $71.0M |
| D.E. Shaw & Co. | 2016Q1 | $338.41 | +75.2% | $11.7M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $363.35 | +63.1% | $13.9M |
| Ray Dalio (Bridgewater Associates) | 2019Q4 | $374.01 | +58.5% | $5.8M |
| AQR Capital Management | 2016Q1 | $432.04 | +37.2% | $69.1M |
| Norges Bank (Norway SWF) | 2016Q1 | $518.95 | +14.2% | $35.8M |
| Two Sigma Investments | 2016Q1 | $556.06 | +6.6% | $6.6M |
| Izzy Englander (Millennium Mgmt) | 2016Q2 | $597.96 | -0.9% | $19.3M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Norges Bank (Norway SWF)+60,359$36.6M
Added to4
- Izzy Englander (Millennium Mgmt)+21,800$13.2M
- AQR Capital Management+12,863$7.8M
- Ray Dalio (Bridgewater Associates)+3,626$2.2M
- T. Rowe Price+97$59
Trimmed5
- Renaissance Technologies−24,320$14.7M
- D.E. Shaw & Co.−19,850$12.0M
- Two Sigma Investments−13,552$8.2M
- Ken Griffin (Citadel Advisors)−4,649$2.8M
- Wellington Management−36$22K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $7.87B |
| 2022Q2 | 14 | $2.81B |
| 2022Q3 | 13 | $11.2M |
| 2022Q4 | 18 | $249.0M |
| 2023Q1 | 14 | $162.2M |
| 2023Q2 | 11 | $223.4M |
| 2023Q3 | 11 | $229.3M |
| 2023Q4 | 11 | $216.0M |
| 2024Q1 | 11 | $221.9M |
| 2024Q2 | 11 | $225.3M |
| 2024Q3 | 8 | $175.6M |
| 2024Q4 | 8 | $121.0M |
| 2025Q1 | 7 | $118.2M |
| 2025Q2 | 8 | $146.0M |
| 2025Q3 | 9 | $220.0M |
| 2025Q4 | 10 | $239.1M |
Who owns DDS
10 super-investors · 2025Q4
Tracked stake
396.8K
shares
Combined value
$239M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added4Trim5
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 119.8K | $73M |
| 2 | AQR Capital Management | 116.6K | $71M |
| 3 | Norges Bank Norway SWF | 60.4K | $37M |
| 4 | Izzy Englander Millennium Mgmt | 32.6K | $20M |
| 5 | Ken Griffin Citadel Advisors | 23.5K | $14M |
| 6 | D.E. Shaw & Co. | 19.8K | $12M |
| 7 | Two Sigma Investments | 11.1K | $7M |
| 8 | Ray Dalio Bridgewater Associates | 9.7K | $6M |
| 9 | Wellington Management | 917 | $556K |
| 10 | T. Rowe Price | 2.4K | $1K |
Recent moves
20 transactions
- −36 · 2025Q4
- +97 · 2025Q4
- −4,649 · 2025Q4
- −13,552 · 2025Q4
- +12,863 · 2025Q4
- +21,800 · 2025Q4
- TRIMD.E. Shaw & Co.−19,850 · 2025Q4
- +3,626 · 2025Q4
- −24,320 · 2025Q4
- +60,359 · 2025Q4
- +19,299 · 2025Q3
- TRIMD.E. Shaw & Co.−5,087 · 2025Q3
- +953 · 2025Q3
- +174 · 2025Q3
- +8,973 · 2025Q3
- +12,699 · 2025Q3
- +14,900 · 2025Q3
- −24,503 · 2025Q3
- +6,089 · 2025Q3
- −42,877 · 2025Q2
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