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 | |
|---|---|---|---|---|---|---|
|
SA
4951
Seabridge Gold
SA
$2.72B
| $229K | ﹤0.01% |
12,425
+10,697
| +619% | +$182K |
|
|
SCS
4952
PUT
DELISTED
Steelcase
SCS
| $229K | ﹤0.01% |
19,200
+19,100
| +19,100% | +$231K |
|
4953
Crown Castle
CCI
$34.6B
| $228K | ﹤0.01% |
+1,239
| New | +$221K |
|
4954
PUT
Harmony Gold Mining
HMY
$9.7B
| $228K | ﹤0.01% |
45,500
+19,700
| +76% | +$84.2K |
|
4955
Fusion Fuel Green
HTOO
$8.51M
| $228K | ﹤0.01% |
752
+330
| +78% | +$83.2K |
|
4956
CALL
Primoris Services
PRIM
$4.06B
| $228K | ﹤0.01% |
9,600
+4,800
| +100% | +$124K |
|
4957
The RealReal
REAL
$1.41B
| $228K | ﹤0.01% |
31,473
-59,571
| -65% | -$527K |
|
4958
CALL
Regency Centers
REG
$14.9B
| $228K | ﹤0.01% |
3,200
+1,300
| +68% | +$91K |
|
4959
Schneider National
SNDR
$6.17B
| $228K | ﹤0.01% |
8,976
-13,820
| -61% | -$360K |
|
|
AMRN
4960
Amarin Corp
AMRN
$297M
| $227K | ﹤0.01% |
3,451
-5,753
| -63% | -$380K |
|
4961
CALL
Blackbaud
BLKB
$1.94B
| $227K | ﹤0.01% |
3,800
+300
| +9% | +$19.6K |
|
4962
PUT
CEVA Inc
CEVA
$831M
| $227K | ﹤0.01% |
5,600
-47,300
| -89% | -$1.84M |
|
4963
PUT
Howard Hughes
HHH
$3.94B
| $227K | ﹤0.01% |
2,308
-1,154
| -33% | -$106K |
|
|
ONT
4964
CALL
Onterris Inc
ONT
$731M
| $227K | ﹤0.01% |
4,300
+300
| +8% | +$14.9K |
|
4965
PUT
Outset Medical
OM
$86.4M
| $227K | ﹤0.01% |
333
| – | – |
|
|
UHT
4966
CALL
Universal Health Realty Income Trust
UHT
$621M
| $227K | ﹤0.01% |
3,900
+1,000
| +34% | +$58K |
|
|
SPPI
4967
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $227K | ﹤0.01% |
176,178
-40,759
| -19% | -$37.5K |
|
|
DOMA
4968
PUT
DELISTED
Doma Holdings, Inc.
DOMA
| $227K | ﹤0.01% |
4,196
+2,796
| +200% | +$224K |
|
4969
CALL
Granite Construction
GVA
$5.16B
| $226K | ﹤0.01% |
6,900
+4,300
| +165% | +$148K |
|
4970
CALL
MasTec
MTZ
$22.7B
| $226K | ﹤0.01% |
2,600
-3,300
| -56% | -$288K |
|
4971
CALL
Warby Parker
WRBY
$3.19B
| $226K | ﹤0.01% |
6,700
+5,300
| +379% | +$171K |
|
|
BERY
4972
PUT
DELISTED
Berry Global Group, Inc.
BERY
| $226K | ﹤0.01% |
4,247
-3,594
| -46% | -$210K |
|
|
AMPS
4973
DELISTED
Altus Power
AMPS
| $226K | ﹤0.01% |
+30,516
| New | +$240K |
|
|
GOEV
4974
PUT
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $226K | ﹤0.01% |
89
-96
| -52% | -$264K |
|
|
FRC
4975
CALL
DELISTED
First Republic Bank
FRC
| $226K | ﹤0.01% |
1,400
-10,500
| -88% | -$1.83M |
|
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.