Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
NVIDIA
NVDA
|
+$216M |
| 2 |
Apple
AAPL
|
+$159M |
| 3 |
Broadcom
AVGO
|
+$128M |
| 4 |
Booking.com
BKNG
|
+$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
+$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$141M |
| 2 |
Amazon
AMZN
|
+$53.1M |
| 3 |
TSMC
TSM
|
+$45.7M |
| 4 |
Netflix
NFLX
|
+$45.3M |
| 5 |
Pfizer
PFE
|
+$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
951
Fennec Pharmaceuticals
FENC
$250M
| $188K | ﹤0.01% |
22,710
+22,458
| +8,912% | +$186K |
|
952
Lufax Holding
LU
$2.62B
| $188K | ﹤0.01% |
67,423
+45,766
| +211% | +$128K |
|
|
SRTA
953
Strata Critical Medical, Inc. Class A Common Stock
SRTA
$342M
| $187K | ﹤0.01% |
46,420
+27,307
| +143% | +$110K |
|
954
Owens & Minor
OMI
$423M
| $186K | ﹤0.01% |
20,494
+17,307
| +543% | +$157K |
|
955
Invesco S&P 500 Equal Weight Energy ETF
RSPG
$422M
| $186K | ﹤0.01% |
+2,499
| New | +$186K |
|
956
Syndax Pharmaceuticals
SNDX
$1.4B
| $186K | ﹤0.01% |
19,921
+18,264
| +1,102% | +$171K |
|
957
Kopin
KOPN
$363M
| $185K | ﹤0.01% |
121,161
+39,480
| +48% | +$60.3K |
|
958
TORM
TRMD
$2.16B
| $183K | ﹤0.01% |
11,026
-13,049
| -54% | -$217K |
|
959
Hormel Foods
HRL
$14B
| $182K | ﹤0.01% |
6,030
-4,950
| -45% | -$149K |
|
960
Hyliion Holdings
HYLN
$282M
| $182K | ﹤0.01% |
137,971
+134,039
| +3,409% | +$177K |
|
961
Gambling.com
GAMB
$290M
| $181K | ﹤0.01% |
15,294
+11,395
| +292% | +$135K |
|
962
Navios Maritime Partners
NMM
$1.4B
| $181K | ﹤0.01% |
+4,816
| New | +$181K |
|
|
QIPT
963
Quipt Home Medical
QIPT
$116M
| $181K | ﹤0.01% |
+101,570
| New | +$181K |
|
964
Suzano
SUZ
$11.8B
| $180K | ﹤0.01% |
19,135
+16,120
| +535% | +$152K |
|
965
Entravision Communication
EVC
$217M
| $179K | ﹤0.01% |
77,554
+70,586
| +1,013% | +$163K |
|
966
PROS Holdings
PRO
$737M
| $179K | ﹤0.01% |
+11,480
| New | +$179K |
|
967
WillScot Mobile Mini Holdings
WSC
$4.28B
| $179K | ﹤0.01% |
+6,535
| New | +$179K |
|
968
Hamilton Insurance Group
HG
$2.38B
| $178K | ﹤0.01% |
+8,260
| New | +$178K |
|
969
Lloyds Banking Group
LYG
$66.7B
| $178K | ﹤0.01% |
42,016
+22,939
| +120% | +$97.2K |
|
970
Marqeta
MQ
$2.66B
| $178K | ﹤0.01% |
30,676
-336,069
| -92% | -$1.95M |
|
971
ReNew
RNW
$2.77B
| $176K | ﹤0.01% |
+25,473
| New | +$176K |
|
972
ATAI Life Sciences
ATAI
$984M
| $174K | ﹤0.01% |
+79,533
| New | +$174K |
|
973
Direxion Daily MSFT Bull 2X Shares
MSFU
$140M
| $174K | ﹤0.01% |
3,506
-9,524
| -73% | -$473K |
|
974
YieldMax Universe Fund of Option Income ETFs
YMAX
$1.08B
| $174K | ﹤0.01% |
+12,667
| New | +$174K |
|
975
Cellebrite
CLBT
$4.22B
| $173K | ﹤0.01% |
+10,864
| New | +$173K |
|