Vault-13

SEER INC SEER

COM CL A · Common Stock · CUSIP 81578P106

59 institutional holders +1 vs Q1 2026
20,511,28120.5m shares reported held*
37.0% of all shares outstanding*
$34.0mreported value*
9 new 14 added 20 reduced 8 sold out net sold ≈ $1.4m (-827.7k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 55.4m as of 2026-08-05, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.66. Options: 1 managers hold calls ($13.4k notional), 0 hold puts (—).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 97Q4 22: 100Q1 23: 100Q2 23: 87Q3 23: 80Q4 23: 91Q1 24: 89Q2 24: 93Q3 24: 71Q4 24: 72Q1 25: 68Q2 25: 69Q3 25: 59Q4 25: 63Q1 26: 58Q2 26: 5959Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202297
Q4 2022100
Q1 2023100
Q2 202387
Q3 202380
Q4 202391
Q1 202489
Q2 202493
Q3 202471
Q4 202472
Q1 202568
Q2 202569
Q3 202559
Q4 202563
Q1 202658
Q2 202659

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 24: 24 bought or addedQ3 24: 54 cut or sold outQ4 24: 28 bought or addedQ4 24: 33 cut or sold outQ4 24Q1 25: 20 bought or addedQ1 25: 36 cut or sold outQ2 25: 31 bought or addedQ2 25: 29 cut or sold outQ2 25Q3 25: 13 bought or addedQ3 25: 36 cut or sold outQ4 25: 18 bought or addedQ4 25: 35 cut or sold outQ4 25Q1 26: 17 bought or addedQ1 26: 37 cut or sold outQ2 26: 23 bought or addedQ2 26: 28 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20242454
Q4 20242833
Q1 20252036
Q2 20253129
Q3 20251336
Q4 20251835
Q1 20261737
Q2 20262328

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$5k$10k$15kQ3 25 calls: $2.0kQ3 25 puts: $0Q3 25P/C 0.00Q4 25 calls: $1.8kQ4 25 puts: $0Q4 25P/C 0.00Q1 26 calls: $2.7kQ1 26 puts: $0Q1 26P/C 0.00Q2 26 calls: $13.4kQ2 26 puts: $0Q2 26P/C 0.00
Numbers
QuarterCallsPutsP/C
Q3 2025$2.0k$00.00
Q4 2025$1.8k$00.00
Q1 2026$2.7k$00.00
Q2 2026$13.4k$00.00

Biggest buyers

CITADEL ADVISORS LLC New +519,310+519.3k
Voss Capital, LP New +137,291+137.3k
Advisory Services Network, LLC Added +132,648+132.6k
EDGEWOOD MANAGEMENT LLC Added +100,000+100.0k
JACOBS LEVY EQUITY MANAGEMENT, INC Added +79,090+79.1k
Marquette Asset Management, LLC New +61,816+61.8k
JANE STREET GROUP, LLC New +59,400+59.4k
GOLDMAN SACHS GROUP INC Added +52,465+52.5k
Rangeley Capital, LLC Added +37,698+37.7k
GEODE CAPITAL MANAGEMENT, LLC Added +37,453+37.5k

Biggest sellers

AJU IB Investment Co., Ltd. Sold out -816,375-816.4k
BlackRock, Inc. Reduced -393,199-393.2k
T3 Companies, LLC Sold out -170,962-171.0k
VANGUARD CAPITAL MANAGEMENT LLC Reduced -127,938-127.9k
D. E. Shaw & Co., Inc. Sold out -125,154-125.2k
ACADIAN ASSET MANAGEMENT LLC Reduced -121,005-121.0k
NewEdge Advisors, LLC Sold out -78,709-78.7k
NORTHERN TRUST CORP Reduced -55,665-55.7k
MARSHALL WACE, LLP Sold out -45,790-45.8k
Shay Capital LLC Reduced -41,282-41.3k

Biggest calls

GROUP ONE TRADING LLC New $13.4k8.1k shares

Biggest puts

None

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Farokhzad Omid 13G · exempt (held before listing) +4.2 pts · filed 2026-05-15 12.0% +4.2 pts 6.9m≈ $11.5m 2026-05-15
Schindel Yair Chaim 13G · exempt (held before listing) filed 2025-01-08 8.3% 4.9m≈ $8.2m 2025-01-08

Fell to 5% or below in the last year: Invus Global Management, LLC (4.4%, 2026-05-04), Radoff Bradley Louis (4.6%, 2026-04-13)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 2 sellingQ1 25Q2 25: 0 buyingQ2 25: 3 sellingQ3 25: 0 buyingQ3 25: 2 sellingQ3 25Q4 25: 0 buyingQ4 25: 2 sellingQ1 26: 0 buyingQ1 26: 2 sellingQ1 26Q2 26: 0 buyingQ2 26: 1 sellingQ3 26: 0 buyingQ3 26: 2 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—2$26.0k—
Q2 20250—3$147.0k$62.9k
Q3 20250—2$83.3k—
Q4 20250—2$80.1k—
Q1 20260—2$63.9k—
Q2 20260—1$12.3k—
Q3 20260—2$38.1k$23.2k
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-18 Horn David R. PRESIDENT & CFO Sold 7,309 $2.03 $14.8k7.3k shares -2%
2026-07-08 Nishar Dipchand Director Sold plan 10,660 $2.18 $23.2k10.7k shares -15%
2026-05-20 Horn David R. PRESIDENT & CFO Sold 7,303 $1.69 $12.3k7.3k shares -2%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 SOFTBANK GROUP CORP. 0.05% of their portfolio TOKYO, M0 5,135,3835.1m $8.5m $8.5m 0.05% Unchanged
2 Siren, L.L.C. 0.08% of their portfolio New York, NY 2,458,6732.5m $4.1m $4.1m 0.08% Unchanged
3 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 1,953,7042.0m $3.2m $3.2m 0.00% Reduced -121.0k -121,005
4 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,831,0581.8m $3.0m $3.0m 0.00% Reduced -127.9k -127,938
5 BlackRock, Inc. 0.00% of their portfolio New York, NY 1,428,4051.4m $2.4m $2.4m 0.00% Reduced -393.2k -393,199
6 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 985,500985.5k $1.6m $1.6m 0.00% Added +8.8k +8,812
7 NANO CAP NEW MILLENNIUM GROWTH FUND L P 1.05% of their portfolio STATEN ISLAND, NY 825,000825.0k $1.4m $1.4m 1.05% Unchanged
8 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 519,310519.3k $862.1k $862.1k 0.00% New
9 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 492,298492.3k $817.2k $817.2k 0.00% Reduced -19.3k -19,300
10 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 460,430460.4k $764.5k $764.5k 0.00% Added +37.5k +37,453
11 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 459,443459.4k $762.7k $762.7k 0.01% Unchanged
12 Peapod Lane Capital LLC 0.50% of their portfolio Bedford Hills, NY 445,450445.4k $739.4k $739.4k 0.50% Added +6.9k +6,869
13 1888 Investments, LLC 1.06% of their portfolio DENVER, CO 359,143359.1k $596.2k $596.2k 1.06% Unchanged
14 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 246,638246.6k $409.4k $409.4k 0.00% Added +52.5k +52,465
15 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 222,332222.3k $369.1k $369.1k 0.00% Added +79.1k +79,090
16 Rangeley Capital, LLC 0.34% of their portfolio NEW CANAAN, CT 222,000222.0k $368.5k $368.5k 0.34% Added +37.7k +37,698
17 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 216,961217.0k $360.2k $360.2k 0.00% Added +1.4k +1,433
18 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 212,625212.6k $353.0k $353.0k 0.00% Reduced -9.3k -9,291
19 EDGEWOOD MANAGEMENT LLC 0.00% of their portfolio GREENWICH, CT 200,000200.0k $332.0k $332.0k 0.00% Added +100.0k +100,000
20 GSA CAPITAL PARTNERS LLP 0.02% of their portfolio LONDON, X0 184,524184.5k $306.0k $306.0k 0.02% Reduced -10.0k -9,980
21 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 159,950159.9k $265.5k $265.5k 0.00% Unchanged
22 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 145,434145.4k $241.4k $241.4k 0.00% Reduced -15.4k -15,445
23 Advisory Services Network, LLC 0.00% of their portfolio ATLANTA, GA 142,648142.6k $236.8k $236.8k 0.00% Added +132.6k +132,648
24 Voss Capital, LP 0.01% of their portfolio HOUSTON, TX 137,291137.3k $227.9k $227.9k 0.01% New
25 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 114,348114.3k $191.5k $191.5k 0.00% Unchanged
26 Shay Capital LLC 0.02% of their portfolio NEW YORK, NY 94,20894.2k $156.4k $156.4k 0.02% Reduced -41.3k -41,282
27 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 78,89578.9k $131.0k $131.0k 0.00% Reduced -55.7k -55,665
28 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 73,81573.8k $122.5k $122.5k 0.00% Unchanged
29 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 73,20073.2k $121.5k $121.5k 0.00% Added +10.0k +10,000
30 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 71,56071.6k $119.0k $119.0k 0.00% Reduced -57 -57
31 Palumbo Wealth Management LLC 0.02% of their portfolio GREAT NECK, NY 68,48368.5k $113.7k $113.7k 0.02% Added +1.3k +1,296
32 Marquette Asset Management, LLC 0.01% of their portfolio MINNEAPOLIS, MN 61,81661.8k $102.6k $102.6k 0.01% New
33 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 59,40059.4k $98.6k $98.6k 0.00% New
34 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 56,99357.0k $94.6k $94.6k 0.00% Reduced -79 -79
35 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 51,91451.9k $87.0k $87.0k 0.00% Added +12.1k +12,059
36 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 44,37744.4k $73.7k $73.7k 0.00% Added +31.2k +31,227
37 PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 33,88733.9k $56.3k $56.3k 0.00% Reduced -10.2k -10,165
38 Pathstone Holdings, LLC 0.00% of their portfolio ENGLEWOOD, NJ 26,51026.5k $44.0k $44.0k 0.00% Reduced -1.7k -1,695
39 UBS Group AG 0.00% of their portfolio ZURICH, V8 26,13926.1k $43.4k $43.4k 0.00% Reduced -22.3k -22,257
40 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 23,83523.8k $39.6k $39.6k 0.00% Reduced -2.6k -2,625
41 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 22,70922.7k $37.0k $37.0k 0.00% New
42 Sequoia Financial Advisors, LLC 0.00% of their portfolio Akron, OH 16,60016.6k $27.6k $27.6k 0.00% Unchanged
43 Bronte Capital Management Pty Ltd. 0.00% of their portfolio Bondi Junction, C3 15,10915.1k $25.1k $25.1k 0.00% New
44 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 14,11514.1k $23.4k $23.4k 0.00% Reduced -698 -698
45 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 12,88912.9k $21.4k $21.4k 0.00% Unchanged
46 FNY Investment Advisers, LLC 0.01% of their portfolio NEW YORK, NY 8,5008.5k $14.0k $14.0k 0.01% Unchanged
47 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 8,1278.1k $13.5k $13.5k 0.00% Reduced -40.1k -40,084
48 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 2,3362.3k $3.9k $3.9k 0.00% Reduced -297 -297
49 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 1,6031.6k $2.7k $2.7k 0.00% Reduced -447 -447
50 Atlantic Union Bankshares Corp 0.00% of their portfolio GLEN ALLEN, VA 1,2501.2k $2.1k $2.1k 0.00% New
51 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 1,0001.0k $1.7k $1.7k 0.00% Unchanged
52 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 867867 $1.4k $1.4k 0.00% New
53 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 662662 $1.1k $1.1k 0.00% Unchanged
54 FMR LLC 0.00% of their portfolio BOSTON, MA 635635 $1.1k $1.1k 0.00% Reduced -9 -9
55 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 631631 $1.0k $1.0k 0.00% New
56 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 380380 $630 $630 0.00% Unchanged
57 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 134134 $222 $222 0.00% Unchanged
58 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 131131 $217 $217 0.00% Added +128 +128
59 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 2323 $38 $38 0.00% Unchanged