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 | +$234M | |
| 2 | +$97.5M | |
| 3 | +$96.8M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.6M |
| 5 |
Pinduoduo
PDD
|
+$54.9M |
Top Sells
| 1 | +$129M | |
| 2 | +$92.9M | |
| 3 | +$82.9M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$68.4M |
| 5 |
Meta Platforms (Facebook)
META
|
+$59.2M |
Sector Composition
| 1 | Technology | 34.01% |
| 2 | Consumer Discretionary | 12.8% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.04% |
| 5 | Communication Services | 4.24% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
326
GoodRx Holdings
GDRX
$635M
| $1.81M | 0.04% |
428,341
+385,048
|
|
||
|
ODP
327
DELISTED
ODP
ODP
| $1.8M | 0.04% |
64,630
+63,815
|
|
||
328
Sempra
SRE
$62.8B
| $1.8M | 0.04% |
19,989
-16,508
|
|
||
|
HOUS
329
DELISTED
Anywhere Real Estate
HOUS
| $1.79M | 0.04% |
169,195
+43,871
|
|
||
330
Valley National Bancorp
VLY
$7.02B
| $1.78M | 0.04% |
168,297
+157,702
|
|
||
331
Monster Beverage
MNST
$83.3B
| $1.75M | 0.04% |
+25,983
|
|
||
332
iShares Russell 1000 Growth ETF
IWF
$117B
| $1.74M | 0.04% |
3,716
-1,043
|
|
||
333
BWX Technologies
BWXT
$18.8B
| $1.74M | 0.04% |
9,436
+687
|
|
||
334
Burlington
BURL
$19.3B
| $1.74M | 0.04% |
6,824
-2,135
|
|
||
335
Omega Healthcare
OHI
$14.3B
| $1.73M | 0.04% |
40,905
+25,227
|
|
||
336
Globalstar
GSAT
$7.9B
| $1.72M | 0.04% |
47,394
+25,469
|
|
||
337
Tradeweb Markets
TW
$26.2B
| $1.72M | 0.04% |
+15,524
|
|
||
338
Grayscale Bitcoin Trust
GBTC
$26.1B
| $1.72M | 0.04% |
+19,144
|
|
||
339
Soleno Therapeutics
SLNO
$2.1B
| $1.7M | 0.04% |
+25,109
|
|
||
340
ProShares Short Russell2000
RWM
$127M
| $1.7M | 0.04% |
101,017
+100,260
|
|
||
341
NiSource
NI
$22.4B
| $1.69M | 0.04% |
39,065
+17,819
|
|
||
342
Datadog
DDOG
$39.3B
| $1.68M | 0.04% |
+11,770
|
|
||
343
Advanced Micro Devices
AMD
$326B
| $1.66M | 0.04% |
10,275
-331,733
|
|
||
344
Dollar Tree
DLTR
$25.2B
| $1.66M | 0.04% |
+17,592
|
|
||
|
SA
345
Seabridge Gold
SA
$4.19B
| $1.64M | 0.04% |
68,078
+66,856
|
|
||
346
Ero Copper
ERO
$3.55B
| $1.64M | 0.04% |
81,230
+76,826
|
|
||
347
Dollar General
DG
$34.4B
| $1.64M | 0.04% |
15,892
-36,931
|
|
||
348
Forward Air
FWRD
$790M
| $1.64M | 0.04% |
63,918
+60,355
|
|
||
349
Kyndryl
KD
$2.78B
| $1.63M | 0.04% |
54,282
-4,516
|
|
||
350
Cintas
CTAS
$80.4B
| $1.62M | 0.04% |
7,905
+3,569
|
|