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 |
Apple
AAPL
|
$45.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$33.2M |
| 5 |
Citigroup
C
|
$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
$111M |
| 3 |
NVIDIA
NVDA
|
$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
$60.9M |
| 5 |
Procter & Gamble
PG
|
$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
OBE
251
Obsidian Energy
OBE
$392M
| $1.51M | ﹤0.01% |
236,135
+210,854
| +834% | +$1.35M |
|
252
Bloom Energy
BE
$13.4B
| $1.49M | ﹤0.01% |
74,723
+60,067
| +410% | +$1.2M |
|
253
Melco Resorts & Entertainment
MLCO
$3.8B
| $1.48M | ﹤0.01% |
116,286
-155,525
| -57% | -$1.98M |
|
254
SPDR Euro Stoxx 50 ETF
FEZ
$4.52B
| $1.48M | ﹤0.01% |
+32,895
| New | +$1.48M |
|
255
Qfin Holdings, Inc. American Depositary Shares
QFIN
$3.81B
| $1.47M | ﹤0.01% |
75,768
-456,706
| -86% | -$8.85M |
|
256
Darden Restaurants
DRI
$24.5B
| $1.46M | ﹤0.01% |
9,390
+4,292
| +84% | +$666K |
|
|
TE
257
T1 Energy Inc.
TE
$309M
| $1.45M | ﹤0.01% |
+163,609
| New | +$1.45M |
|
258
Protagonist Therapeutics
PTGX
$3.77B
| $1.45M | ﹤0.01% |
+63,059
| New | +$1.45M |
|
259
Five Below
FIVE
$8.46B
| $1.45M | ﹤0.01% |
7,037
-9,491
| -57% | -$1.95M |
|
260
United Therapeutics
UTHR
$18.1B
| $1.43M | ﹤0.01% |
+6,374
| New | +$1.43M |
|
261
iShares MSCI South Korea ETF
EWY
$5.22B
| $1.42M | ﹤0.01% |
23,235
+16,340
| +237% | +$1M |
|
262
Vermilion Energy
VET
$1.12B
| $1.41M | ﹤0.01% |
109,061
+80,142
| +277% | +$1.04M |
|
263
Samsara
IOT
$24B
| $1.4M | ﹤0.01% |
71,006
+16,378
| +30% | +$323K |
|
264
Direxion Daily Small Cap Bear 3x Shares
TZA
$287M
| $1.4M | ﹤0.01% |
+44,926
| New | +$1.4M |
|
265
Invesco S&P 500 Low Volatility ETF
SPLV
$7.99B
| $1.39M | ﹤0.01% |
+22,284
| New | +$1.39M |
|
266
Stellantis
STLA
$26.2B
| $1.38M | ﹤0.01% |
76,079
+42,239
| +125% | +$768K |
|
267
Under Armour
UAA
$2.2B
| $1.38M | ﹤0.01% |
+145,670
| New | +$1.38M |
|
268
Hyatt Hotels
H
$13.8B
| $1.38M | ﹤0.01% |
+12,318
| New | +$1.38M |
|
|
MDC
269
DELISTED
M.D.C. Holdings, Inc.
MDC
| $1.37M | ﹤0.01% |
35,357
+35,353
| +883,825% | +$1.37M |
|
270
LPL Financial
LPLA
$26.6B
| $1.37M | ﹤0.01% |
6,788
+5,815
| +598% | +$1.18M |
|
271
Dolby
DLB
$6.96B
| $1.37M | ﹤0.01% |
+15,993
| New | +$1.37M |
|
272
Cencora
COR
$56.7B
| $1.36M | ﹤0.01% |
8,521
-10,023
| -54% | -$1.6M |
|
273
ICL Group
ICL
$7.85B
| $1.36M | ﹤0.01% |
200,402
+41,809
| +26% | +$284K |
|
274
Invesco Solar ETF
TAN
$765M
| $1.35M | ﹤0.01% |
17,453
-74,392
| -81% | -$5.77M |
|
275
Liberty Global Class A
LBTYA
$4.05B
| $1.35M | ﹤0.01% |
69,077
-2,562
| -4% | -$50K |
|