TECX

Tectonic Therapeutic Inc$29.17 4.48%
Health CareUSCUSIP 878972108· EOD Aug 4, 2026◍ Confluence graph
Tracked 13F Holders
105
-90 QoQ
13F Value (tracked)
$414.7M
Insider Net · 180d
-$453K
2↑ 2↓
Recent Filings
15
Smart-money sentimentBearish
BearishBullish
13F funds (latest Q)27 adding · 20 trimming
Insider net (180d)-$453K

Price & smart-money activity

$29.17 4.48%5Y -68.5%
$0.17$25.00$49.83$74.66$99.4920212022202320242025202614596198326151015142913342527292555
Hover for who · click for detailEnd-of-day closing prices52w $14.71 – $37.93

Who owns TECX?

105 tracked 13F filers

105 tracked 13F filers disclose a position in TECX as of the latest SEC 13F filings, a combined $414.7M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1FMR LLC
$87.1M
2.8M
+0.3%
Added · +9K sh
Q1 2026
2TCG Crossover Management, LLC
$37.2M
1.2M
New
+1.2M sh
Q1 2026
3Aberdeen Group plc
$35.3M
1.1M
Held
Q1 2026
4BlackRock, Inc.
$26.6M
860K
+0.7%
Added · +6K sh
Q1 2026
5BRAIDWELL LP
$26.2M
847K
−8.7%
Reduced · −80K sh
Q1 2026
6First Light Asset Management, LLC
$20.0M
648K
New
+648K sh
Q1 2026
7BAKER BROS. ADVISORS LP
$18.8M
608K
−33%
Reduced · −296K sh
Q1 2026
85AM Venture Management, LLC
$18.8M
607K
Held
Q1 2026
9VANGUARD CAPITAL MANAGEMENT LLC
$14.6M
474K
First observed position
No prior filed position
Q1 2026
10Vestal Point Capital, LP
$10.1M
328K
Held
Q1 2026
11KENNEDY CAPITAL MANAGEMENT LLC
$8.9M
287K
+37%
Added · +77K sh
Q1 2026
12GEODE CAPITAL MANAGEMENT, LLC
$8.3M
268K
+1.8%
Added · +5K sh
Q1 2026
13MARSHALL WACE, LLP
$7.1M
230K
+643%
Added · +199K sh
Q1 2026
14ORBIMED ADVISORS LLC
$7.0M
227K
−61%
Reduced · −348K sh
Q1 2026
15STATE STREET CORP
$6.6M
214K
+2.1%
Added · +4K sh
Q1 2026
16Squarepoint Ops LLC
$5.1M
164K
−18%
Reduced · −35K sh
Q1 2026
17PRICE T ROWE ASSOCIATES INC /MD/
$5.1M
164K
New
+164K sh
Q1 2026
18Ikarian Capital, LLC
$4.9M
158K
New
+158K sh
Q1 2026
19AMERIPRISE FINANCIAL INC
$4.4M
143K
New
+143K sh
Q1 2026
20Opaleye Management Inc.
$3.8M
123K
−43%
Reduced · −92K sh
Q1 2026
21Soleus Capital Management, L.P.
$3.8M
122K
New
+122K sh
Q1 2026
22D. E. Shaw & Co., Inc.
$3.6M
116K
−3.4%
Reduced · −4K sh
Q1 2026
23WELLS FARGO & COMPANY/MN
$3.5M
113K
−6.4%
Reduced · −8K sh
Q1 2026
24Woodline Partners LP
$3.1M
100K
−50%
Reduced · −100K sh
Q1 2026
25ExodusPoint Capital Management, LP
$2.6M
84K
−25%
Reduced · −28K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is TECX being bought or sold by institutions?

Last quarter, 15 funds opened a new position in TECX and 12 added to an existing one, while 20 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
15
funds
Added
12
funds
Reduced
20
funds
Exited
0
funds

Funds that own TECX also own

CompanyCo-held byCombined value
ELI LILLY & COLLY43 funds$33.2B
BOSTON SCIENTIFIC CORPBSX42 funds$5.9B
REVOLUTION MEDICINES INCRVMD42 funds$2.3B
BRISTOL-MYERS SQUIBB COBMY41 funds$6.1B
MERCK & CO. INC.MRK40 funds$11.4B
INTUITIVE SURGICAL INCISRG39 funds$12.2B
UNITEDHEALTH GROUP INCUNH39 funds$11.9B
GILEAD SCIENCES INCGILD39 funds$9.2B
THERMO FISHER SCIENTIFIC INCTMO39 funds$7.2B
RHYTHM PHARMACEUTICALS INCRYTM39 funds$1.1B
IONIS PHARMACEUTICALS INCIONS39 funds$1.1B
DANAHER CORPDHR38 funds$7.3B

Ranked by how many of TECX's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$182K
2 insiders
Sells · 180d
$636K
2 insiders
Net
-$453K
10 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jun 30, 2026McNamara PeterChief Scientific OfficerSell (S)172$6K
May 4, 2026Ruddy Marcella K.Chief Medical OfficerSell (S)1K$32K
Apr 1, 2026Ruddy Marcella K.Chief Medical OfficerSell (S)1K$31K
Mar 6, 2026McNamara PeterChief Scientific OfficerSell (S)215$8K
Mar 6, 2026McNamara PeterChief Scientific OfficerSell (S)6K$181K
Mar 6, 2026Ruddy Marcella K.Chief Medical OfficerSell (S)10K$300K
Mar 4, 2026McNamara PeterChief Scientific OfficerSell (S)2K$41K
Mar 3, 2026McNamara PeterChief Scientific OfficerSell (S)2K$36K
Feb 11, 2026REICIN ALISEChief Executive Officer, DirectorBuy (P)3K$53K
Feb 10, 2026Lochner DanielChief Financial OfficerBuy (P)6K$130K
Apr 11, 2025SPRINGER TIMOTHY ADirector, 10% OwnerBuy (P)54K$876K
Apr 11, 2025SPRINGER TIMOTHY ADirector, 10% OwnerBuy (P)9K$155K

Institutional ownership over time

13 funds-27 since Q3 2024
052103Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $1.2M

Recent filings

15 shown

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Connected entities for TECX

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Ask your agent what changed in TECX

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/TECX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for TECX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for TECX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.