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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2401
CALL
Marqeta
MQ
$1.8B
| $2M | ﹤0.01% |
83,925
+35,375
| +73% | +$875K |
|
2402
PUT
Host Hotels & Resorts
HST
$16.8B
| $2M | ﹤0.01% |
96,700
+65,200
| +207% | +$1.31M |
|
2403
Hecla Mining
HL
$10.2B
| $1.99M | ﹤0.01% |
414,104
+249,780
| +152% | +$997K |
|
2404
CALL
TE Connectivity
TEL
$58.8B
| $1.99M | ﹤0.01% |
13,700
-39,700
| -74% | -$5.56M |
|
2405
Rio Tinto
RIO
$148B
| $1.99M | ﹤0.01% |
31,180
+29,600
| +1,873% | +$1.98M |
|
2406
CALL
Delek US
DK
$3.87B
| $1.99M | ﹤0.01% |
64,600
+33,700
| +109% | +$912K |
|
2407
Kenvue
KVUE
$37B
| $1.98M | ﹤0.01% |
92,357
-298,903
| -76% | -$6.07M |
|
2408
PUT
Advanced Drainage Systems
WMS
$10.9B
| $1.98M | ﹤0.01% |
11,500
+8,000
| +229% | +$1.2M |
|
2409
CALL
Liquidia Corp
LQDA
$7.67B
| $1.98M | ﹤0.01% |
133,900
+27,000
| +25% | +$375K |
|
2410
PUT
Payoneer
PAYO
$2.41B
| $1.97M | ﹤0.01% |
405,900
+89,900
| +28% | +$438K |
|
2411
PUT
ACM Research
ACMR
$5.83B
| $1.97M | ﹤0.01% |
67,600
-42,100
| -38% | -$964K |
|
2412
Church & Dwight Co
CHD
$23.1B
| $1.97M | ﹤0.01% |
18,860
+16,606
| +737% | +$1.66M |
|
2413
CALL
Amkor Technology
AMKR
$16.1B
| $1.97M | ﹤0.01% |
61,000
+49,100
| +413% | +$1.56M |
|
2414
Interactive Brokers
IBKR
$40.9B
| $1.97M | ﹤0.01% |
70,428
-89,688
| -56% | -$2.23M |
|
2415
YPF
YPF
$20.2B
| $1.97M | ﹤0.01% |
+99,275
| New | +$1.72M |
|
|
HBI
2416
CALL
DELISTED
Hanesbrands
HBI
| $1.96M | ﹤0.01% |
338,700
+36,600
| +12% | +$175K |
|
2417
PUT
Mohawk Industries
MHK
$6.9B
| $1.96M | ﹤0.01% |
15,000
+5,300
| +55% | +$595K |
|
2418
Natural Resource Partners
NRP
$1.3B
| $1.96M | ﹤0.01% |
21,337
+21,252
| +25,002% | +$1.97M |
|
2419
PUT
Qorvo
QRVO
$7.63B
| $1.96M | ﹤0.01% |
17,100
-3,800
| -18% | -$419K |
|
2420
CALL
Valaris
VAL
$5.51B
| $1.96M | ﹤0.01% |
26,000
+3,700
| +17% | +$248K |
|
|
LAZR
2421
CALL
DELISTED
Luminar Technologies
LAZR
| $1.96M | ﹤0.01% |
66,180
+9,940
| +18% | +$363K |
|
2422
CALL
ATI
ATI
$27B
| $1.95M | ﹤0.01% |
38,200
+9,300
| +32% | +$421K |
|
2423
Sibanye-Stillwater
SBSW
$5.92B
| $1.95M | ﹤0.01% |
414,881
+105,013
| +34% | +$482K |
|
2424
PUT
Fiverr
FVRR
$376M
| $1.95M | ﹤0.01% |
92,700
+68,400
| +281% | +$1.71M |
|
2425
CALL
Autoliv
ALV
$8.6B
| $1.95M | ﹤0.01% |
16,200
+2,100
| +15% | +$235K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.