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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5026
Arqit Quantum
ARQQ
$270M
| $219K | ﹤0.01% |
564
-1,230
| -69% | -$496K |
|
5027
CALL
Halozyme
HALO
$9.88B
| $219K | ﹤0.01% |
5,500
-4,000
| -42% | -$142K |
|
5028
iShares US Energy ETF
IYE
$1.72B
| $219K | ﹤0.01% |
5,364
+5,192
| +3,019% | +$191K |
|
|
LADR
5029
CALL
Ladder Capital
LADR
$1.24B
| $219K | ﹤0.01% |
18,500
-13,500
| -42% | -$159K |
|
|
RTB
5030
PUT
RTB Digital
RTB
$230M
| $219K | ﹤0.01% |
148
+107
| +261% | +$134K |
|
5031
PUT
Trinity Industries
TRN
$2.92B
| $219K | ﹤0.01% |
6,400
+6,300
| +6,300% | +$194K |
|
5032
CALL
WD-40
WDFC
$2.98B
| $219K | ﹤0.01% |
1,200
-1,100
| -48% | -$235K |
|
|
CPUH
5033
CALL
DELISTED
Compute Health Acquisition Corp.
CPUH
| $219K | ﹤0.01% |
22,400
-77,000
| -77% | -$751K |
|
5034
CALL
Graphic Packaging
GPK
$3.35B
| $218K | ﹤0.01% |
10,900
+4,600
| +73% | +$89.4K |
|
|
SMAR
5035
DELISTED
Smartsheet Inc.
SMAR
| $218K | ﹤0.01% |
+3,992
| New | +$228K |
|
|
QUOT
5036
CALL
DELISTED
Quotient Technology Inc
QUOT
| $218K | ﹤0.01% |
34,300
+23,500
| +218% | +$158K |
|
|
MBT
5037
PUT
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
| $218K | ﹤0.01% |
39,800
+30,500
| +328% | +$228K |
|
5038
CALL
Diodes
DIOD
$3.5B
| $217K | ﹤0.01% |
2,500
-2,100
| -46% | -$191K |
|
5039
CALL
Howard Hughes
HHH
$3.94B
| $217K | ﹤0.01% |
2,203
+2,098
| +1,998% | +$193K |
|
5040
PUT
SiriusXM
SIRI
$11B
| $217K | ﹤0.01% |
3,290
-1,360
| -29% | -$85.6K |
|
5041
PUT
Camden Property Trust
CPT
$11.5B
| $216K | ﹤0.01% |
1,300
+1,000
| +333% | +$165K |
|
5042
Global X FinTech ETF
FINX
$170M
| $216K | ﹤0.01% |
6,774
-1,424
| -17% | -$46.6K |
|
5043
PUT
Jefferies Financial Group
JEF
$12.7B
| $216K | ﹤0.01% |
6,904
+4,498
| +187% | +$153K |
|
5044
CALL
LoveSac
LOVE
$242M
| $216K | ﹤0.01% |
4,000
-10,400
| -72% | -$499K |
|
5045
PUT
Bio-Techne
TECH
$11.2B
| $216K | ﹤0.01% |
2,000
| – | – |
|
5046
PUT
UWM Holdings
UWMC
$672M
| $216K | ﹤0.01% |
47,800
-200,300
| -81% | -$967K |
|
|
WIRE
5047
PUT
DELISTED
Encore Wire Corp
WIRE
| $216K | ﹤0.01% |
1,900
-2,700
| -59% | -$324K |
|
|
EMWP
5048
CALL
DELISTED
Eros Media World PLC
EMWP
| $216K | ﹤0.01% |
77,700
+73,650
| +1,819% | +$307K |
|
|
BHVN
5049
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $216K | ﹤0.01% |
+1,823
| New | +$227K |
|
5050
Aclaris Therapeutics
ACRS
$715M
| $215K | ﹤0.01% |
12,482
-11,717
| -48% | -$160K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.