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 | |
|---|---|---|---|---|---|---|
1726
Star Bulk Carriers
SBLK
$3.14B
| $2.92M | ﹤0.01% |
+98,478
| New | +$2.58M |
|
1727
Nutrien
NTR
$32.7B
| $2.92M | ﹤0.01% |
28,103
-13,673
| -33% | -$1.13M |
|
1728
CALL
Comstock Resources
CRK
$3.97B
| $2.92M | ﹤0.01% |
223,500
+15,900
| +8% | +$141K |
|
1729
PUT
ACM Research
ACMR
$5.83B
| $2.92M | ﹤0.01% |
140,900
+124,700
| +770% | +$3.14M |
|
1730
CALL
Bakkt Inc
BKKT
$333M
| $2.91M | ﹤0.01% |
18,908
+3,064
| +19% | +$436K |
|
1731
Upstart Holdings
UPST
$2.58B
| $2.91M | ﹤0.01% |
26,690
-60,161
| -69% | -$6.93M |
|
1732
CALL
Teleflex
TFX
$5.85B
| $2.91M | ﹤0.01% |
+8,200
| New | +$2.7M |
|
|
CCXI
1733
PUT
DELISTED
ChemoCentryx, Inc.
CCXI
| $2.9M | ﹤0.01% |
115,800
+60,200
| +108% | +$1.69M |
|
1734
ProShares Short VIX Short-Term Futures ETF
SVXY
$220M
| $2.9M | ﹤0.01% |
+106,400
| New | +$2.91M |
|
1735
Albemarle
ALB
$13.5B
| $2.9M | ﹤0.01% |
13,115
-821
| -6% | -$173K |
|
1736
CALL
KKR & Co
KKR
$89.2B
| $2.89M | ﹤0.01% |
49,500
+9,600
| +24% | +$604K |
|
1737
CALL
Omnicom Group
OMC
$22.7B
| $2.88M | ﹤0.01% |
33,900
+500
| +1% | +$40.2K |
|
1738
CALL
Guidewire Software
GWRE
$11.5B
| $2.88M | ﹤0.01% |
30,400
+24,000
| +375% | +$2.29M |
|
1739
PUT
Check Point Software Technologies
CHKP
$13.3B
| $2.88M | ﹤0.01% |
20,800
-4,000
| -16% | -$522K |
|
1740
PUT
Dillards
DDS
$8.87B
| $2.87M | ﹤0.01% |
10,700
+7,500
| +234% | +$1.94M |
|
1741
PUT
Stratasys
SSYS
$697M
| $2.87M | ﹤0.01% |
113,100
-3,500
| -3% | -$84.4K |
|
|
LOGC
1742
CALL
DELISTED
ContextLogic
LOGC
| $2.85M | ﹤0.01% |
42,263
-3,124
| -7% | -$220K |
|
1743
CSX Corp
CSX
$98.6B
| $2.85M | ﹤0.01% |
76,142
+12,234
| +19% | +$433K |
|
1744
PUT
VanEck Energy Income ETF
EINC
$102M
| $2.84M | ﹤0.01% |
38,900
+6,900
| +22% | +$410K |
|
|
SAFE
1745
PUT
DELISTED
Safehold Inc.
SAFE
| $2.84M | ﹤0.01% |
51,200
+35,000
| +216% | +$2.17M |
|
1746
PUT
Ralph Lauren
RL
$22.2B
| $2.84M | ﹤0.01% |
25,000
-7,300
| -23% | -$860K |
|
|
POLY
1747
PUT
DELISTED
Plantronics, Inc.
POLY
| $2.83M | ﹤0.01% |
71,900
+68,600
| +2,079% | +$1.95M |
|
1748
PUT
Intrepid Potash
IPI
$460M
| $2.83M | ﹤0.01% |
34,400
+29,300
| +575% | +$1.61M |
|
1749
PUT
MPLX
MPLX
$59.5B
| $2.82M | ﹤0.01% |
85,100
+65,600
| +336% | +$2.12M |
|
1750
PUT
Schrodinger
SDGR
$1.12B
| $2.82M | ﹤0.01% |
82,700
+62,200
| +303% | +$1.89M |
|
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.