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 | |
|---|---|---|---|---|---|---|
1001
VinFast Auto
VFS
$7.65B
| $165K | ﹤0.01% |
46,418
+10,376
| +29% | +$36.9K |
|
|
AHH
1002
Armada Hoffler Properties
AHH
$596M
| $164K | ﹤0.01% |
23,912
-1,268
| -5% | -$8.7K |
|
|
PLG
1003
Platinum Group Metals
PLG
$197M
| $164K | ﹤0.01% |
107,352
+99,295
| +1,232% | +$152K |
|
|
TE
1004
T1 Energy Inc.
TE
$293M
| $164K | ﹤0.01% |
133,444
+5,777
| +5% | +$7.1K |
|
|
MTSR
1005
Metsera, Inc. Common Stock
MTSR
$3.91B
| $164K | ﹤0.01% |
+5,798
| New | +$164K |
|
1006
INmune Bio
INMB
$52.4M
| $162K | ﹤0.01% |
70,343
+27,534
| +64% | +$63.4K |
|
1007
Agilon Health
AGL
$448M
| $161K | ﹤0.01% |
70,079
-71,949
| -51% | -$165K |
|
1008
AXIS Capital
AXS
$7.76B
| $161K | ﹤0.01% |
+1,555
| New | +$161K |
|
|
PLTY
1009
YieldMax PLTR Option Income Strategy ETF
PLTY
$611M
| $161K | ﹤0.01% |
+2,515
| New | +$161K |
|
1010
Tronox
TROX
$793M
| $160K | ﹤0.01% |
+31,563
| New | +$160K |
|
|
BORR
1011
Borr Drilling
BORR
$879M
| $159K | ﹤0.01% |
87,205
-5,068
| -5% | -$9.24K |
|
1012
iShares MSCI Italy ETF
EWI
$728M
| $159K | ﹤0.01% |
3,307
+2,597
| +366% | +$125K |
|
|
SMCY
1013
YieldMax SMCI Option Income Strategy ETF
SMCY
$335M
| $159K | ﹤0.01% |
7,507
+5,982
| +392% | +$127K |
|
1014
Star Bulk Carriers
SBLK
$2.19B
| $158K | ﹤0.01% |
9,160
-28,736
| -76% | -$496K |
|
1015
Sportradar
SRAD
$8.88B
| $158K | ﹤0.01% |
5,640
-116,791
| -95% | -$3.27M |
|
1016
Scholar Rock
SRRK
$3.06B
| $158K | ﹤0.01% |
4,472
-2,640
| -37% | -$93.3K |
|
1017
Wolfspeed
WOLF
$294M
| $158K | ﹤0.01% |
+397,459
| New | +$158K |
|
1018
ADT
ADT
$7.26B
| $157K | ﹤0.01% |
18,632
-20,578
| -52% | -$173K |
|
1019
Global X DAX Germany ETF
DAX
$305M
| $157K | ﹤0.01% |
3,496
+3,224
| +1,185% | +$145K |
|
1020
Mid-America Apartment Communities
MAA
$16.9B
| $157K | ﹤0.01% |
+1,062
| New | +$157K |
|
1021
Mural Oncology
MURA
$35.9M
| $156K | ﹤0.01% |
63,299
+38,347
| +154% | +$94.5K |
|
1022
iShares MSCI Emerging Markets ex China ETF
EMXC
$13.1B
| $155K | ﹤0.01% |
+2,465
| New | +$155K |
|
1023
Kilroy Realty
KRC
$5.08B
| $155K | ﹤0.01% |
4,532
+1,051
| +30% | +$35.9K |
|
1024
Roundhill Daily 2X Long Magnificent Seven ETF
MAGX
$97.7M
| $155K | ﹤0.01% |
3,640
+2,437
| +203% | +$104K |
|
1025
Crinetics Pharmaceuticals
CRNX
$3.18B
| $153K | ﹤0.01% |
5,341
+5,167
| +2,970% | +$148K |
|