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 | |
|---|---|---|---|---|---|---|
|
CPE
1576
CALL
DELISTED
Callon Petroleum Company
CPE
| $3.21M | ﹤0.01% |
96,100
-132,800
| -58% | -$5M |
|
1577
CALL
Ingersoll Rand
IR
$33B
| $3.21M | ﹤0.01% |
55,200
+38,300
| +227% | +$2.16M |
|
1578
CALL
SL Green Realty
SLG
$3.88B
| $3.21M | ﹤0.01% |
136,500
+23,400
| +21% | +$789K |
|
1579
CALL
Molina Healthcare
MOH
$10.3B
| $3.21M | ﹤0.01% |
12,000
+3,100
| +35% | +$891K |
|
1580
CALL
Targa Resources
TRGP
$60.4B
| $3.21M | ﹤0.01% |
44,000
+11,100
| +34% | +$819K |
|
1581
PUT
Ares Management
ARES
$28.5B
| $3.2M | ﹤0.01% |
38,400
-96,900
| -72% | -$7.7M |
|
|
BBBY
1582
PUT
Bed Bath & Beyond
BBBY
$473M
| $3.2M | ﹤0.01% |
173,910
+41,470
| +31% | +$773K |
|
1583
PUT
Alpha Metallurgical Resources
AMR
$1.82B
| $3.2M | ﹤0.01% |
20,500
-5,800
| -22% | -$928K |
|
1584
CALL
CubeSmart
CUBE
$9.53B
| $3.2M | ﹤0.01% |
69,200
+64,900
| +1,509% | +$2.91M |
|
1585
PUT
Payoneer
PAYO
$2.41B
| $3.19M | ﹤0.01% |
508,800
+504,900
| +12,946% | +$3M |
|
|
GTM
1586
CALL
ZoomInfo Technologies
GTM
$861M
| $3.19M | ﹤0.01% |
129,200
-76,100
| -37% | -$1.95M |
|
1587
CALL
Charles River Laboratories
CRL
$10.9B
| $3.19M | ﹤0.01% |
15,800
+14,700
| +1,336% | +$3.33M |
|
1588
PUT
Blink Charging
BLNK
$75.2M
| $3.18M | ﹤0.01% |
367,600
+250,900
| +215% | +$2.65M |
|
1589
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $3.17M | ﹤0.01% |
71,100
-94,100
| -57% | -$3.51M |
|
1590
CALL
Prologis
PLD
$138B
| $3.17M | ﹤0.01% |
25,400
-140,800
| -85% | -$17.3M |
|
|
FRG
1591
PUT
DELISTED
Franchise Group, Inc.
FRG
| $3.17M | ﹤0.01% |
116,300
+91,000
| +360% | +$2.62M |
|
1592
CALL
Kymera Therapeutics
KYMR
$9.1B
| $3.17M | ﹤0.01% |
106,900
-50,400
| -32% | -$1.63M |
|
1593
CALL
GitLab
GTLB
$5.28B
| $3.16M | ﹤0.01% |
92,300
-40,200
| -30% | -$1.77M |
|
|
ANSS
1594
CALL
DELISTED
Ansys
ANSS
| $3.16M | ﹤0.01% |
9,500
+7,600
| +400% | +$2.14M |
|
1595
CALL
Commercial Metals
CMC
$7.63B
| $3.14M | ﹤0.01% |
64,200
+49,600
| +340% | +$2.57M |
|
1596
Linde
LIN
$237B
| $3.14M | ﹤0.01% |
+8,823
| New | +$2.95M |
|
1597
PUT
TransUnion
TRU
$14.8B
| $3.13M | ﹤0.01% |
50,400
+46,000
| +1,045% | +$3.01M |
|
1598
Antero Resources
AR
$10.9B
| $3.12M | ﹤0.01% |
+135,143
| New | +$3.56M |
|
1599
PUT
Ciena
CIEN
$55.3B
| $3.11M | ﹤0.01% |
59,300
-70,600
| -54% | -$3.52M |
|
1600
CALL
Perion Network
PERI
$367M
| $3.11M | ﹤0.01% |
78,600
-8,400
| -10% | -$280K |
|
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.