Cathie Wood's ARK ETFs once again saw significant transactions on Tuesday, August 12, 2025, with a focus on technology and biotech stocks. The largest transaction of the day was the purchase of 738,367 shares of The Trade Desk Inc ( $TTD (-5.03%) ) with a total value of $39,266,357. This move underscores ARK's continued confidence in the digital advertising platform, where the fund had already significantly increased its positions in recent days.

Another notable transaction involved Block Inc ( $SQ (-8.11%) ), formerly known as Square. Here ARK sold 215,543 shares, representing a sizable value of $15,741,105. This sale represents one of the larger divestitures of the day and could indicate a strategic realignment of ARK's position towards the financial services and digital payments company.

ARK also made a significant purchase of 643,406 shares of Pinterest Inc ( $PINS ) worth $21,998,051. The social media company has repeatedly been in ARK's focus in the past, as evidenced by the continuous purchases over the past week. This trend points to a bullish assessment of Pinterest's growth prospects on the part of ARK.

In the biotech sector, ARK's ARK ETF purchased 128,896 shares of CRISPR Therapeutics AG ( $CRSP (-3.49%) ) for a total value of $714,567, continuing its investment in the gene-editing company. On the flip side, various ARK ETFs divested shares of DraftKings Inc ( $DKNG (-7.73%) ), Guardant Health Inc ( $GH (-1.74%) ), Robinhood Markets Inc ($HOOD (-9.88%) ), Palantir Technologies Inc ($PLTR (-7.09%) ), Roblox Corp ( $RBLX ) and Shopify Inc ($SHOP (-9.54%) ). The largest sell-off was DraftKings, with 221,203 shares worth $9,452,004 sold.

Other notable buys included Exact Sciences Corp ( $EXAS (-2.45%) ) and Personalis Inc ( $PSNL (-6.98%) ). ARK bought 93,753 and 134,035 shares worth $3,835,435 and $603,157 respectively. The continued purchases in these stocks could indicate a focused strategy targeting innovative healthcare companies.

Smaller transactions were also part of the day's activity. ARK bought shares in Compass Pathways PLC ( $CMPS (-4.46%) ) and 10X Genomics Inc ( $TXG (-2.95%) ). Despite the smaller dollar amounts, these purchases could be part of a long-term strategy that focuses on up-and-coming companies in the respective sectors.

Some of dear Cathie's transactions don't need to be understood but well, the young lady's returns speak for themselves.

$ARKK (-5.94%) and $ARKF (-6.33%) over 70% return since 365 days, I can only shine with +27% with my portfolio.

I will remain invested in $TTD (-5.03%) My current portfolio has a lot of risk, as I have generated some cash.

At the moment I'm considering whether I should possibly $HMWO (-3.69%) and $EQQQ (-4.82%) or just the $VUSA (-3.84%) into the portfolio.

Temporarily sold $AMD (-10.01%) +35%, $HIMS (-8.47%) +15%, $DOCN (-5.38%) +9%.

I would re-enter Hims and AMD at certain prices and possibly add other companies to the portfolio if they fit my selection.

My positions:

$SOFI (-10.55%)

$ZETA (-11.1%)

$TTD (-5.03%)

On the watchlist

$DDOG (-5.26%)

$LNTH (+1.37%)

$LMND (-10.89%)

$TOST (-5.34%)

$DASH (-5.35%)

$BROS

$APLD (+12.43%)

$SCI (-0.2%)

Earnings next week

$PLTR (-7.09%)

$SMCI

$CELH

$ARM (-10.82%)

$CLF (-8.05%)

$AMC

$QCOM (-8.32%)

$DKNG (-7.73%)

$HIMS (-8.47%)

$ELF (-13.74%)

$ANET

$CLOV (-4.76%)

$SQ (-8.11%)

$APP (-6.13%)

$VST (-7.1%)

$NVO (-3.35%)

$RIVN (-3.35%)

$DVN (-5.86%)

$U (-8.34%)

$WYNN (-4.2%)

$CVS (-0.22%)

$CEG

$TTD (-5.03%)

$MRNA (-4.23%)

$$BRK.A (-1.94%) (Saturday)

$CDE (-3.57%)

$AFRM (-9.72%)

$MELI (-6.22%)

$FTNT (-4.55%)

$PINS

$ABNB (-2.76%)

$ABX

$HL (-3.43%)

$MAR

$IONQ (-10.59%)

$NET (-4.51%)

$AXON (-4.73%)

$ALB (-7.74%)

$DOCS (-1.39%)

$WOLF (-11.73%)

$BROS

$PAAS (-0.9%)

$DDOG (-5.26%)

$LCID (-3.53%)

$TOST (-5.34%)

$LUMN (-4.07%)

$MLCO (-6.25%)

$DOCN (-5.38%)

$ALAB (+2.62%)

$ACB (-13.35%)