Ticker · CUSIP 40145W101
Holders (tracked)
6
Combined shares
1,660,219
Combined value
$49.96M
Last close
$37.54
Quarter
2025Q4
Price · 1Y$37.54+13.43 (+55.70%)H $40.65 · L $19.67 · Avg Vol 315K
Position opened
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 6.
Price is +24.8% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
13 events
- Ken Griffin (Citadel Advisors) exited2026-02-17−77,663 shares · 2025Q4Position
- D.E. Shaw & Co. added2026-02-17+39,981 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−27,210 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−174,492 shares · 2025Q4Position
- Wellington Management trimmed2026-02-17−20,597 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+1,409 shares · 2025Q4Position
- Renaissance Technologies trimmed2026-02-12−25,000 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+300,587 shares · 2025Q3Position
- Two Sigma Investments added2025-11-14+98,013 shares · 2025Q3Position
- Wellington Management added2025-11-14+36,072 shares · 2025Q3Position
- D.E. Shaw & Co. opened position2025-11-14+46,548 shares · 2025Q3Position
- T. Rowe Price opened position2025-11-14+10,476 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+109,900 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of GRDN…
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 |
|---|---|---|---|---|
| Wellington Management | 2024Q3 | $19.63 | +91.2% | $42.2M |
| Two Sigma Investments | 2024Q3 | $23.63 | +58.9% | $5.6M |
| Renaissance Technologies | 2024Q4 | $24.74 | +51.8% | $4.6M |
| Izzy Englander (Millennium Mgmt) | 2024Q3 | $25.09 | +49.6% | $6.3M |
| T. Rowe Price | 2025Q3 | $26.71 | +40.5% | $446K |
| D.E. Shaw & Co. | 2025Q3 | $28.01 | +34.0% | $3.2M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
- D.E. Shaw & Co.+39,981$1.2M
- T. Rowe Price+1,409$42
Trimmed4
- Izzy Englander (Millennium Mgmt)−174,492$5.3M
- Two Sigma Investments−27,210$819K
- Renaissance Technologies−25,000$752K
- Wellington Management−20,597$620K
Exited1
- Ken Griffin (Citadel Advisors)−77,663$2.0M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 4 | $18.4M |
| 2024Q4 | 1 | $2.9M |
| 2025Q1 | 3 | $13.4M |
| 2025Q2 | 5 | $33.8M |
| 2025Q3 | 7 | $51.0M |
| 2025Q4 | 6 | $50.0M |
Who owns GRDN
6 super-investors · 2025Q4
Tracked stake
1.66M
shares
Combined value
$50M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added2Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 1.12M | $34M |
| 2 | Izzy Englander Millennium Mgmt | 167.5K | $5M |
| 3 | Two Sigma Investments | 149.5K | $4M |
| 4 | Renaissance Technologies | 121.6K | $4M |
| 5 | D.E. Shaw & Co. | 86.5K | $3M |
| 6 | T. Rowe Price | 11.9K | $358K |
Recent moves
20 transactions
- −77,663 · 2025Q4
- −27,210 · 2025Q4
- −174,492 · 2025Q4
- −20,597 · 2025Q4
- +1,409 · 2025Q4
- +39,981 · 2025Q4
- −25,000 · 2025Q4
- +300,587 · 2025Q3
- +46,548 · 2025Q3
- +98,013 · 2025Q3
- +36,072 · 2025Q3
- +10,476 · 2025Q3
- +109,900 · 2025Q3
- +78,724 · 2025Q2
- −19,484 · 2025Q2
- +642,733 · 2025Q2
- −67,365 · 2025Q2
- +60,935 · 2025Q1
- −37,035 · 2025Q1
- +464,924 · 2025Q1
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