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 | |
|---|---|---|---|---|---|---|
|
SNP
3626
PUT
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $589K | ﹤0.01% |
11,900
-23,900
| -67% | -$1.2M |
|
|
CDK
3627
PUT
DELISTED
CDK Global, Inc.
CDK
| $589K | ﹤0.01% |
12,100
+12,000
| +12,000% | +$537K |
|
3628
RingCentral
RNG
$4.5B
| $587K | ﹤0.01% |
5,009
-682
| -12% | -$100K |
|
|
DOC
3629
CALL
DELISTED
PHYSICIANS REALTY TRUST
DOC
| $587K | ﹤0.01% |
33,500
+9,000
| +37% | +$158K |
|
3630
PUT
Dana Inc
DAN
$2.93B
| $586K | ﹤0.01% |
33,400
+26,700
| +399% | +$546K |
|
3631
First Trust Natural Gas ETF
FCG
$617M
| $586K | ﹤0.01% |
24,059
+8,824
| +58% | +$185K |
|
3632
CALL
Meritage Homes
MTH
$4.89B
| $586K | ﹤0.01% |
14,800
-4,400
| -23% | -$215K |
|
3633
CALL
Genesco
GCO
$416M
| $585K | ﹤0.01% |
9,200
+7,500
| +441% | +$488K |
|
3634
CALL
Pinnacle West Capital
PNW
$12.8B
| $585K | ﹤0.01% |
7,500
-1,900
| -20% | -$136K |
|
|
RUBY
3635
DELISTED
Rubius Therapeutics, Inc
RUBY
| $585K | ﹤0.01% |
106,220
+103,593
| +3,943% | +$658K |
|
3636
PUT
AST SpaceMobile
ASTS
$17.4B
| $583K | ﹤0.01% |
58,500
+26,700
| +84% | +$196K |
|
|
OSH
3637
DELISTED
Oak Street Health, Inc.
OSH
| $583K | ﹤0.01% |
21,708
-5,904
| -21% | -$124K |
|
|
EBIX
3638
CALL
DELISTED
Ebix Inc
EBIX
| $583K | ﹤0.01% |
17,600
-2,600
| -13% | -$81.2K |
|
|
AMRN
3639
CALL
Amarin Corp
AMRN
$290M
| $582K | ﹤0.01% |
8,845
-5,460
| -38% | -$360K |
|
|
OTLY
3640
PUT
Oatly Group
OTLY
$447M
| $582K | ﹤0.01% |
5,810
-4,515
| -44% | -$595K |
|
|
RTLR
3641
PUT
DELISTED
Rattler Midstream LP Common Units
RTLR
| $582K | ﹤0.01% |
41,700
+28,700
| +221% | +$373K |
|
3642
CALL
Arrow Electronics
ARW
$10.9B
| $581K | ﹤0.01% |
4,900
-4,400
| -47% | -$551K |
|
|
VISN
3643
PUT
Vistance Networks Inc
VISN
$2.67B
| $581K | ﹤0.01% |
73,800
-36,100
| -33% | -$330K |
|
|
RDNW
3644
PUT
RideNow Group
RDNW
$251M
| $581K | ﹤0.01% |
17,000
+16,100
| +1,789% | +$542K |
|
3645
CALL
SI-BONE Inc
SIBN
$756M
| $580K | ﹤0.01% |
25,700
+19,000
| +284% | +$394K |
|
3646
PUT
Jack in the Box
JACK
$299M
| $579K | ﹤0.01% |
6,200
-400
| -6% | -$35.4K |
|
3647
Procore
PCOR
$7.03B
| $579K | ﹤0.01% |
+10,001
| New | +$636K |
|
3648
AerCap
AER
$23.9B
| $577K | ﹤0.01% |
11,477
+1,175
| +11% | +$70.4K |
|
3649
Alpha and Omega Semiconductor
AOSL
$922M
| $577K | ﹤0.01% |
10,572
+6,101
| +136% | +$317K |
|
3650
PUT
First Interstate BancSystem
FIBK
$3.67B
| $577K | ﹤0.01% |
+15,700
| New | +$619K |
|
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.