WGS in the 13F filings

GeneDx Holdings Corp · CUSIP 81663L200

Sector · Health care services and research

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024

Quarter end: 31 Mar 2026; the date the book describes
Filed: 18 May 2026; latest of these filings; the earliest 12 May 2026
Managers listing it: 27; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed: 4,414,895; combined, among listed positions
Reported value: $285m; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +166,564.

Managers listing WGS in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

27 of 27 holders

				Action		Filing
ARK Investment Management LLC	1,324,583	$85m	0.66%	Added	+720,022	12 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	647,401	$42m	under 0.1%	Added	+465,050	15 May 2026 (the filing on sec.gov)
Invesco Ltd	540,229	$35m	under 0.1%	Trimmed	-246,237	12 May 2026 (the filing on sec.gov)
MFS Investment Management	358,978	$23m	under 0.1%	Added	+160,052	14 May 2026 (the filing on sec.gov)
Wellington Management Group LLP	341,005	$22m	under 0.1%	Trimmed	-43,745	15 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	295,621	$19m	under 0.1%	Trimmed	-537,117	15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC	153,716	$9.9m	under 0.1%	Added	+96,400	14 May 2026 (the filing on sec.gov)
Capital Research Global Investors	151,055	$9.7m	under 0.1%	Added	+28,389	13 May 2026 (the filing on sec.gov)
Millennium Management LLC	149,906	$9.6m	under 0.1%	Added	+83,951	15 May 2026 (the filing on sec.gov)
Polen Capital Management LLC	77,419	$5.0m	under 0.1%	Added	+17,558	14 May 2026 (the filing on sec.gov)
Point72 Asset Management LP	75,795	$4.9m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	70,105	$4.5m	under 0.1%	Added	+58,441	15 May 2026 (the filing on sec.gov)
AllianceBernstein LP	20,050	$2.6m	under 0.1%	Trimmed	-233,404	15 May 2026 (the filing on sec.gov)
Tudor Investment Corp	33,540	$2.2m	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	32,105	$2.1m	under 0.1%	Added	+14,767	15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC	24,180	$1.6m	under 0.1%	Added	+5,144	15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	23,026	$1.5m	under 0.1%	Trimmed	-390,965	15 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.	18,903	$1.2m	under 0.1%	Added	+3,300	15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	18,390	$1.2m	under 0.1%	Trimmed	-6,283	15 May 2026 (the filing on sec.gov)
Marshall Wace LLP	13,782	$885k	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Two Sigma Investments LP	10,447	$671k	under 0.1%	Trimmed	-14,527	15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	8,348	$536k	under 0.1%	Held	0	18 May 2026 (the filing on sec.gov)
Man Group PLC	8,102	$520k	under 0.1%	New	new	15 May 2026 (the filing on sec.gov)
Winton Group Ltd	7,200	$462k	under 0.1%	New	new	12 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	5,666	$364k	under 0.1%	Added	+3,130	15 May 2026 (the filing on sec.gov)

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Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

ARK Investment Management LLCexisting position · 1,324,583 shares now+720,022
Citadel Advisors LLCexisting position · 647,401 shares now+465,050
MFS Investment Managementexisting position · 358,978 shares now+160,052
Renaissance Technologies LLCexisting position · 153,716 shares now+96,400
Millennium Management LLCexisting position · 149,906 shares now+83,951

Reductions

Fidelity (FMR LLC)existing position · 295,621 shares now-537,117
T. Rowe Price Associates Incexisting position · 23,026 shares now-390,965
Invesco Ltdexisting position · 540,229 shares now-246,237
AllianceBernstein LPexisting position · 20,050 shares now-233,404
Farallon Capital Management LLCexisting position · 5,000 shares now-65,000

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (5)

Exited (5)

Jane Street Group LLCwas $3.9m
Steadfast Capital Management LPwas $2.9m
Quantbot Technologies LPwas $2.1m
Walleye Capital LLCwas $1.9m
Verition Fund Management LLCwas $290k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

4 in Q4 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

WGS and UNH →WGS and ELV →WGS and CI →Choose a stock to compare with WGS →

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 WGS, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q4 2024	4	$40m	2	1
Q1 2025	2	$52m	2	0
Q2 2025	3	$54m	3	0
Q3 2025	3	$56m	1	2
Q4 2025	6	$116m	14	15
Q1 2026	4	$100m	17	14
Q2 2026	1	$111m	16	13