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ZX Data private stock trade

Executive Summary

  • This quarter, reporting holders marked up their private portfolios by 16.5% ($ weighted). There was an average mark-up of 17.8% (equal weighted).
  • Sentiment up:
  • Sentiment down:
  • In September, 36% of companies with ZX Index Values showed a difference of 10% or less compared to Fund Marks, and 45% of companies with ZX Index Values showed a difference of 20% or less compared to Fund Marks.

Heat Map: July 31st, 2026 Reporting Period

16.5%

Appreciation/Depreciation of All Reported Holdings1

17.8%

Average Mark-Up/Mark-Down Across All Reported Holdings2
CelLink
490.5%
Long Wall (ABL Space)
330.4%
SambaNova
322.7%
Snorkel AI
246.6%
Taalas
81.1%
Anthropic
80.3%
Sila Nano
73.5%
Hammerspace
54.8%
Lambda Labs
44.8%
Crusoe Energy
38.3%
Databricks
36.3%
Ayar Labs
34.0%
JumpCloud
32.3%
Revolut
29.8%
Breeze Airways
28.6%
Sortium
27.3%
LifeMine
27.1%
Versa Networks
27.1%
OneTrust
26.8%
Tenstorrent
25.0%
Algolia
22.6%
Benchling
22.6%
Bright Machines
21.7%
Tanium
20.4%
GupShup
18.2%
Included Health (Grand Rounds)
18.1%
Figure AI
18.0%
Hydra Host
16.7%
Hark
15.5%
Smule
15.3%
Moloco
15.0%
Wasabi Technologies
14.8%
Zipline
14.2%
Retym
13.1%
Xsight Labs
13.0%
Celonis
12.9%
Boom Supersonic
12.5%
Plaid
12.3%
Fanatics
12.2%
KRY
11.7%
Treeline Bio
11.0%
Neuralink
10.3%
Fabletics
9.6%
Starling Bank
9.4%
Rapyd
8.8%
Bytedance
8.4%
GOAT
8.3%
Physical Intelligence
8.1%
Blink Health
7.7%
Chobani
7.6%
goPuff
7.1%
SandboxAQ
6.7%
Verge Genomics
6.7%
Gatik AI
6.4%
Canva
6.2%
Caidya (dMed)
6.1%
Lilac Solutions
6.1%
Mythical
5.8%
Sortera Tech
4.6%
A24 Films
4.2%
Stripe
3.7%
Diamond Foundry
3.5%
Alif Semi
3.3%
Checkr
3.0%
Discord
2.9%
RapidSOS
2.9%
Nscale
2.7%
Waymo
2.2%
Relation Therapeutics
1.5%
SiMa ai
1.5%
Ant Group
1.3%
Apptronik
1.1%
JUUL
1.0%
Bright Peak
0.6%
Astranis
0.1%
Element Labs
0.1%
Menlo Micro
0.1%
Replit
0.1%
Anduril
0.0%
Arctic Wolf
0.0%
Cybereason
0.0%
Deep Instinct
0.0%
Druva
0.0%
EndeavorBio
0.0%
Enevate
0.0%
Flexport
0.0%
Form Energy
0.0%
Gusto
0.0%
KoBold Metals
0.0%
Lessen
0.0%
Noodle
0.0%
Rappi
0.0%
Runway AI
0.0%
Savage X
0.0%
Source
0.0%
Superhuman (Grammarly)
0.0%
Tula Tech
0.0%
VAST Data
0.0%
VerAI
0.0%
Verily
0.0%
Wugen
0.0%
ClearMotion
-0.1%
Frore Systems
-0.2%
Nuro
-0.2%
OpenAI
-0.5%
Skyryse
-0.5%
Evozyne
-0.7%
World Labs
-0.7%
T-Knife
-1.4%
PsiQuantum
-2.2%
Shield AI
-2.2%
Bolt
-2.7%
Oura Health
-2.7%
Flock Safety
-3.0%
Kalshi
-3.0%
Applied Intuition
-3.6%
Lightmatter
-3.6%
Newsela
-3.8%
Sonoma Bio
-3.9%
MasterClass
-4.8%
Teya (SaltPay)
-5.3%
Perplexity AI
-5.4%
Valsoft
-5.4%
Farmers Business Network
-6.5%
Dataminr
-6.7%
Redwood Materials
-7.6%
Epic Games
-7.7%
Akeana
-11.0%
Tory Burch
-12.1%
Snyk
-12.6%
Portal Space
-13.0%
Axiom Space
-19.5%
Ursa
-22.0%
Neon
-25.2%
YuLife
-31.9%
Castle Creek
-34.1%
Radiant Nuclear
-35.4%
Loadsmart
-42.0%
Jetti Resources
-50.3%
Outrider
-53.0%
Blockdaemon
-53.8%
Signifyd
-89.2%
Empower Semi
-98.3%

1 Dollar-weighted return on all reported holdings
2 Equal-weighted mark-up or mark-down across all reported holdings

This quarter, reporting holders marked up their private portfolios by 16.5% ($ weighted). There was an average mark-up of 17.8% (equal weighted).

CelLink experienced the most significant mark-up, followed by Long Wall (ABL Space), SambaNova and Snorkel AI. AI & Machine Learning, CloudTech & DevOps and Data ∓ Analytics saw the largest mark-ups across sectors.

Empower Semi experienced the most significant mark-down as funds wrote down their positions. Signifyd, Blockdaemon and Outrider also saw significant mark-downs. Among sectors, BioTech, Crypto & Blockchain, and EdTech saw the most significant mark-downs.

Comparison of ZX Index Value vs. Fund Marks

CompaniesRobustness Score3ZX Index Values4 vs. Fund Marks
Neuralink7+239.70%
Blockdaemon1+123.20%
Applied Intuition1+108.10%
Celonis2+103.80%
Zipline2+62.50%
Diamond Foundry1+61.70%
Anduril6+56.40%
Anthropic7+45.00%
Dataminr2+41.90%
Ayar Labs6+34.10%
Radiant Nuclear1+34.00%
Lambda Labs7+29.30%
Lightmatter6+26.50%
Perplexity AI4+12.00%
Shield AI2+8.60%
Discord3+7.00%
Tenstorrent3+6.10%
OpenAI6+5.80%
Databricks2+5.30%
Stripe8+4.00%
Gusto1+2.80%
Replit2+0.90%
Redwood Materials2-1.90%
Bolt1-3.50%
Apptronik1-4.80%
Revolut4-5.20%
Crusoe Energy4-5.80%
Canva3-7.50%
Figure AI6-8.90%
Epic Games1-10.10%
VAST Data3-10.20%
Flock Safety1-11.60%
KoBold Metals1-20.10%
Oura Health1-27.70%
Kalshi4-32.30%
Arctic Wolf1-34.30%
PsiQuantum2-35.40%
Snyk2-38.40%
SambaNova1-43.50%
Axiom Space2-44.40%
Fanatics1-46.10%
SandboxAQ4-50.90%

3 ZXData Robustness Score is an internally developed metric to assign confidence levels to the underlying data used in constructing ZXData output metrics. The ZXData Robustness Score is calculated on a scale of 1 to 10 for each company, based on the number of executed trades, number of buy and sell orders submitted to ZX and skewness of the order book.
4 ZX Index Value is an internally developed metric that reflects secondary values for private companies using an algorithmic approach based on the values sourced from ZX and ZXData partners. The algorithm used to calculate ZX Index Values incorporates both executed transaction values and bid and ask pricing.

In September, 36% of companies with ZX Index Values showed a difference of 10% or less compared to Fund Marks, and 45% of companies with ZX Index Values showed a difference of 20% or less compared to Fund Marks. Among the companies, Neuralink, Blockdaemon and Applied Intuition had the highest positive variance in reported marks versus ZX Index Values. SandboxAQ, Fanatics and Axiom Space had the highest negative variance in reported marks versus ZX Index Values.

Highest Variance in Reported Marks
CompanyNormalized Std Dev5$ Weighted AvgMaxMin
Cybereason.63$0.66$1.74$0.50
Form Energy.43$16.14$24.18$9.71
Superhuman (Grammarly).33$16.06$25.60$13.10
Menlo Micro.33$0.65$1.10$0.55
MasterClass.27$1.92$2.54$1.50

5 Normalized Standard Deviation is used to express the measure of spread across reported marks and allows for comparison between companies independent of their price per share based on a dollar-weighted average.

This period Cybereason ($0.50 - $1.74) saw the highest share price variance across funds followed by Form Energy ($9.71- $24.18) and Superhuman (Grammarly) ($13.10 - $25.60).

Positive Trend Reversal6 (# = consecutive prior qtrs marked down or flat)
Negative Trend Reversal7 (# = consecutive prior qtrs marked up or flat)
Positive Trend Reversal6 (# = consecutive prior qtrs marked down or flat)
Sila Nano
18
Benchling, Treeline Bio
6
Caidya (dMed)
5
Long Wall (ABL Space), Smule
5
Negative Trend Reversal7 (# = consecutive prior qtrs marked up or flat)
Neon
7
Loadsmart
4
PsiQuantum, Radiant Nuclear
4
Redwood Materials
4

6 Positive Trend Reversal reflects an individual holding marked up after consecutive quarterly periods marked down or flat
7 Negative Trend Reversal reflects an individual holding marked down after consecutive quarterly periods marked up or flat

Sila Nano saw its first positive reversal in eighteen quarters while Benchling and Treeline Bio saw their first positive reversals in six quarters. Neon saw its first negative reversal in seven quarters while Loadsmart, PsiQuantum, Radiant Nuclear and Redwood Materials all saw their first negative reversals in four quarters.

Disclaimer

This report is based on data reported by 300+ funds and $110+ billion of value. Many holders of private company shares do not report their holding values and are thus not included in this report’s dataset. Further, many venture-backed private companies are not held by any reporting funds and are thus not included in this report. As such, this report should not be construed as providing a complete picture of shareholder sentiment or venture-backed private company performance. This report does not constitute investment advice or a "research report" as defined by FINRA Rules.

The “ZX Index Value” is derived by applying proprietary weightings to the order flow data collected for the stated period (both bids and asks), based on the order type (firm order or indication of interest) and whether the order has been executed, with greater weight given to more recent orders.

Zanbato, Inc. (“Zanbato”) prepares and disseminates market information about venture-backed private company securities, and the current bids and offers for those securities listed on the ATS operated by Zanbato (“ZX”). The information provided in this report has been prepared by sales, trading, or other non-research functions. Pricing indications and macro commentary are provided for information purposes only. This report is not intended to assess the individual merits of a particular investment or strategy, does not constitute a recommendation to buy or sell any financial instrument or to participate in any trading strategy and should not be construed as such. This report does not constitute investment advice. Certain information in this report has been obtained from third party sources and, while such information is believed by Zanbato to be reliable, it has not been independently verified by Zanbato and Zanbato shall not be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with any use of, or reliance on, such third party information. Furthermore, the information contained in this report September not be current due to, among other things, changes in the financial markets or economic environment. Zanbato does not, and has no obligation to, update any such information contained in this report. Any prices or quotations contained herein are indicative only, do not represent firm quotes as to either price or size and should not be used for valuation purposes.

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