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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Neurocrine Biosciences
NBIX
$14.3B
| $1.33M | ﹤0.01% |
+9,648
| New | +$1.33M |
|
377
iShares TIPS Bond ETF
TIP
$14B
| $1.33M | ﹤0.01% |
+12,417
| New | +$1.33M |
|
378
Fastly
FSLY
$1.11B
| $1.32M | ﹤0.01% |
179,262
+24,374
| +16% | +$180K |
|
379
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$239M
| $1.32M | ﹤0.01% |
37,271
-39,388
| -51% | -$1.4M |
|
380
Keysight
KEYS
$29.1B
| $1.32M | ﹤0.01% |
9,632
+4,756
| +98% | +$650K |
|
381
Crescent Energy
CRGY
$2.12B
| $1.32M | ﹤0.01% |
111,115
+86,667
| +354% | +$1.03M |
|
382
TechnipFMC
FTI
$16.1B
| $1.31M | ﹤0.01% |
50,186
+20,245
| +68% | +$529K |
|
383
Bausch Health
BHC
$2.71B
| $1.3M | ﹤0.01% |
187,080
-128,685
| -41% | -$896K |
|
384
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.2B
| $1.3M | ﹤0.01% |
+35,426
| New | +$1.3M |
|
385
Nokia
NOK
$24.7B
| $1.3M | ﹤0.01% |
343,048
-31,627
| -8% | -$119K |
|
386
iShares MSCI South Korea ETF
EWY
$5.26B
| $1.29M | ﹤0.01% |
19,527
+13,727
| +237% | +$907K |
|
387
Healthcare Realty
HR
$6.4B
| $1.29M | ﹤0.01% |
78,022
-140,687
| -64% | -$2.32M |
|
388
ZTO Express
ZTO
$15.1B
| $1.28M | ﹤0.01% |
61,573
-95,519
| -61% | -$1.98M |
|
389
JB Hunt Transport Services
JBHT
$13.8B
| $1.27M | ﹤0.01% |
+7,953
| New | +$1.27M |
|
390
Ollie's Bargain Outlet
OLLI
$8.12B
| $1.27M | ﹤0.01% |
12,938
+8,117
| +168% | +$797K |
|
391
FirstCash
FCFS
$6.56B
| $1.27M | ﹤0.01% |
+12,100
| New | +$1.27M |
|
392
Upstart Holdings
UPST
$6.63B
| $1.27M | ﹤0.01% |
+53,729
| New | +$1.27M |
|
393
iShares 3-7 Year Treasury Bond ETF
IEI
$16.9B
| $1.27M | ﹤0.01% |
+10,957
| New | +$1.27M |
|
394
STMicroelectronics
STM
$23.2B
| $1.26M | ﹤0.01% |
31,970
-42,657
| -57% | -$1.67M |
|
395
Evolv Technologies
EVLV
$1.44B
| $1.25M | ﹤0.01% |
489,158
+162,233
| +50% | +$414K |
|
396
Skywest
SKYW
$4.42B
| $1.25M | ﹤0.01% |
15,184
-11,394
| -43% | -$935K |
|
397
Stellantis
STLA
$25.8B
| $1.24M | ﹤0.01% |
62,375
+1,014
| +2% | +$20.1K |
|
398
Polaris
PII
$3.35B
| $1.24M | ﹤0.01% |
+15,786
| New | +$1.24M |
|
399
Amkor Technology
AMKR
$6.15B
| $1.23M | ﹤0.01% |
30,704
+17,818
| +138% | +$713K |
|
400
Canadian Pacific Kansas City
CP
$69.9B
| $1.23M | ﹤0.01% |
+15,561
| New | +$1.23M |
|