- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 19 Feb 2026
- latest of these filings; the earliest 10 Feb 2026
- Managers listing it
- 18
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 1 listed it in both
- Shares listed
- 3,010,997
- combined, among listed positions
- Reported value
- $91m
- combined, at the quarter end
Among the 92 comparable managers: 12 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -482,020.
Managers listing GRDN in Q4 2025
18 of 18 holders
Largest increases and reductions, by shares
Increases
- Acadian Asset Management LLCnew position · 117,410 shares now+117,410
- D. E. Shaw & Co.existing position · 86,529 shares now+39,981
- Janus Henderson Group Ltdexisting position · 46,674 shares now+38,674
- Arrowstreet Capital LPnew position · 21,319 shares now+21,319
- Balyasny Asset Management LLCnew position · 19,033 shares now+19,033
Reductions
- Millennium Management LLCexisting position · 167,546 shares now-174,492
- Two Sigma Investments LPexisting position · 149,527 shares now-27,210
- Renaissance Technologies LLCexisting position · 121,600 shares now-25,000
- Wellington Management Group LLPexisting position · 1,123,132 shares now-20,597
- Quantbot Technologies LPexisting position · 16,921 shares now-16,565
New positions and exits
New (4)
Exited (5)
- Walleye Capital LLCwas $4.9m
- Marshall Wace LLPwas $3.7m
- Citadel Advisors LLCwas $2.0m
- Jane Street Group LLCwas $1.8m
- Man Group PLCwas $301k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q3 2024 | 1 | $9.5m | 1 | 0 |
| Q4 2024 | 1 | $8.4m | 0 | 1 |
| Q1 2025 | 1 | $9.0m | 1 | 0 |
| Q2 2025 | 1 | $22m | 1 | 0 |
| Q3 2025 | 1 | $28m | 1 | 0 |
| Q4 2025 | 1 | $32m | 12 | 10 |
| Q1 2026 | 2 | $55m | 14 | 8 |
| Q2 2026 | 2 | $69m | 8 | 14 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
GRDN and PM →GRDN and KO →GRDN and COST →Choose a stock to compare with GRDN →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own GRDN, latest filings →Back to the 13F Explorer →