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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2201
CALL
Xponential Fitness
XPOF
$265M
| $1.49M | ﹤0.01% |
48,900
+48,800
| +48,800% | +$1.29M |
|
2202
PUT
Fabrinet
FN
$17.1B
| $1.48M | ﹤0.01% |
+12,500
| New | +$1.55M |
|
2203
PUT
Globus Medical
GMED
$10.4B
| $1.48M | ﹤0.01% |
+26,200
| New | +$1.68M |
|
2204
CALL
EVgo
EVGO
$200M
| $1.48M | ﹤0.01% |
190,300
+123,200
| +184% | +$724K |
|
2205
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $1.48M | ﹤0.01% |
14,100
+5,400
| +62% | +$335K |
|
2206
Melco Resorts & Entertainment
MLCO
$2.1B
| $1.48M | ﹤0.01% |
116,286
-155,525
| -57% | -$2M |
|
2207
PUT
CSX Corp
CSX
$98.6B
| $1.48M | ﹤0.01% |
49,400
-32,700
| -40% | -$1.01M |
|
2208
CALL
J.M. Smucker
SJM
$12.6B
| $1.48M | ﹤0.01% |
9,400
-5,200
| -36% | -$790K |
|
2209
CALL
Jazz Pharmaceuticals
JAZZ
$15.9B
| $1.48M | ﹤0.01% |
10,100
+7,200
| +248% | +$1.07M |
|
2210
CALL
DaVita
DVA
$15.1B
| $1.48M | ﹤0.01% |
18,200
+7,300
| +67% | +$585K |
|
2211
State Street SPDR EURO STOXX 50 ETF
FEZ
$4.28B
| $1.48M | ﹤0.01% |
+32,895
| New | +$1.41M |
|
|
SNV
2212
CALL
DELISTED
Synovus
SNV
| $1.48M | ﹤0.01% |
47,900
+34,200
| +250% | +$1.3M |
|
2213
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$263M
| $1.48M | ﹤0.01% |
23,900
-17,900
| -43% | -$939K |
|
2214
CALL
Honda
HMC
$36.5B
| $1.48M | ﹤0.01% |
55,700
+22,700
| +69% | +$570K |
|
2215
CALL
TAL Education Group
TAL
$5.71B
| $1.47M | ﹤0.01% |
230,000
-726,600
| -76% | -$5.23M |
|
|
CUTR
2216
PUT
DELISTED
Cutera, Inc.
CUTR
| $1.47M | ﹤0.01% |
62,400
+62,300
| +62,300% | +$1.99M |
|
2217
Qfin Holdings
QFIN
$1.61B
| $1.47M | ﹤0.01% |
75,768
-456,706
| -86% | -$9.57M |
|
|
SHCO
2218
CALL
DELISTED
Soho House & Co
SHCO
| $1.47M | ﹤0.01% |
+224,500
| New | +$1.33M |
|
2219
CALL
Unum
UNM
$13.8B
| $1.47M | ﹤0.01% |
37,100
-13,200
| -26% | -$545K |
|
2220
CALL
Amprius Technologies
AMPX
$1.31B
| $1.47M | ﹤0.01% |
168,300
+79,800
| +90% | +$504K |
|
2221
CALL
Brinker International
EAT
$8.02B
| $1.46M | ﹤0.01% |
38,500
+5,900
| +18% | +$223K |
|
|
BPMC
2222
CALL
DELISTED
Blueprint Medicines
BPMC
| $1.46M | ﹤0.01% |
32,500
+14,900
| +85% | +$671K |
|
2223
PUT
Noodles & Co
NDLS
$90.5M
| $1.46M | ﹤0.01% |
37,688
+37,563
| +30,050% | +$1.72M |
|
2224
CALL
Copart
CPRT
$25.9B
| $1.46M | ﹤0.01% |
38,800
-160,800
| -81% | -$5.47M |
|
2225
CALL
Itron
ITRI
$3.73B
| $1.46M | ﹤0.01% |
26,300
+3,100
| +13% | +$171K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.