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 | |
|---|---|---|---|---|---|---|
7751
PUT
Myomo
MYO
$41M
| $8K | ﹤0.01% |
+2,600
| New | +$9.43K |
|
7752
Energy Vault
NRGV
$531M
| $8K | ﹤0.01% |
4,645
-367
| -7% | -$641 |
|
7753
CALL
Omnicell
OMCL
$1.89B
| $8K | ﹤0.01% |
300
+100
| +50% | +$3.03K |
|
7754
PUT
Old National Bancorp
ONB
$10.1B
| $8K | ﹤0.01% |
500
+300
| +150% | +$4.96K |
|
7755
PUT
Oportun Financial
OPRT
$262M
| $8K | ﹤0.01% |
+3,400
| New | +$12.3K |
|
7756
PUT
Puma Biotechnology
PBYI
$407M
| $8K | ﹤0.01% |
1,600
-18,100
| -92% | -$97.5K |
|
7757
CALL
PCB Bancorp
PCB
$398M
| $8K | ﹤0.01% |
500
-2,500
| -83% | -$41.5K |
|
|
PDS
7758
Precision Drilling
PDS
$1.04B
| $8K | ﹤0.01% |
128
-2,059
| -94% | -$124K |
|
|
PINC
7759
CALL
DELISTED
Premier
PINC
| $8K | ﹤0.01% |
400
-900
| -69% | -$19.5K |
|
7760
PUT
Palomar
PLMR
$3.73B
| $8K | ﹤0.01% |
100
-1,200
| -92% | -$82.3K |
|
7761
CALL
Purple Innovation
PRPL
$35.8M
| $8K | ﹤0.01% |
196
-232
| -54% | -$7.73K |
|
7762
PUT
Pricesmart
PSMT
$5.81B
| $8K | ﹤0.01% |
100
| – | – |
|
|
QIPT
7763
PUT
DELISTED
Quipt Home Medical
QIPT
| $8K | ﹤0.01% |
2,000
-3,900
| -66% | -$17.6K |
|
7764
CALL
Alpha Architect US Quantitative Value ETF
QVAL
$582M
| $8K | ﹤0.01% |
400
+300
| +300% | +$12.4K |
|
|
RINC
7765
DELISTED
AXS Real Estate Income ETF
RINC
| $8K | ﹤0.01% |
347
+27
| +8% | +$648 |
|
7766
PUT
Senseonics Holdings Inc
SENS
$262M
| $8K | ﹤0.01% |
790
+455
| +136% | +$5.28K |
|
|
SIFY
7767
Sify Technologies
SIFY
$1.05B
| $8K | ﹤0.01% |
1,063
+1,026
| +2,773% | +$8.73K |
|
7768
Sonoco
SON
$5.8B
| $8K | ﹤0.01% |
+146
| New | +$8.33K |
|
7769
PUT
Scholar Rock
SRRK
$5.86B
| $8K | ﹤0.01% |
500
-200
| -29% | -$3.15K |
|
7770
PUT
Suzano
SUZ
$10.1B
| $8K | ﹤0.01% |
+700
| New | +$7.88K |
|
7771
PUT
Protara Therapeutics
TARA
$227M
| $8K | ﹤0.01% |
+2,000
| New | +$6.45K |
|
7772
TaskUs
TASK
$531M
| $8K | ﹤0.01% |
+721
| New | +$9.01K |
|
7773
Toro Corp
TORO
$174M
| $8K | ﹤0.01% |
1,491
-1,530
| -51% | -$8.78K |
|
|
TPIC
7774
CALL
DELISTED
TPI Composites
TPIC
| $8K | ﹤0.01% |
2,900
-9,400
| -76% | -$27.7K |
|
|
UHT
7775
Universal Health Realty Income Trust
UHT
$614M
| $8K | ﹤0.01% |
+218
| New | +$8.65K |
|
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.