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 | |
|---|---|---|---|---|---|---|
4901
CALL
Crown Holdings
CCK
$13B
| $237K | ﹤0.01% |
1,900
-1,000
| -34% | -$118K |
|
4902
CALL
NETSCOUT
NTCT
$2.83B
| $237K | ﹤0.01% |
7,400
+6,300
| +573% | +$198K |
|
4903
PUT
OR Royalties Inc
OR
$5.53B
| $237K | ﹤0.01% |
18,000
+9,900
| +122% | +$123K |
|
4904
PUT
Phillips Edison & Co
PECO
$5.5B
| $237K | ﹤0.01% |
+6,900
| New | +$227K |
|
|
PLG
4905
Platinum Group Metals
PLG
$160M
| $237K | ﹤0.01% |
112,473
+57,228
| +104% | +$111K |
|
4906
PUT
Woodward
WWD
$23B
| $237K | ﹤0.01% |
+1,900
| New | +$223K |
|
|
PACW
4907
DELISTED
PacWest Bancorp
PACW
| $237K | ﹤0.01% |
5,504
-2,541
| -32% | -$120K |
|
4908
Donaldson
DCI
$10.7B
| $236K | ﹤0.01% |
4,550
+1,947
| +75% | +$106K |
|
4909
Eldorado Gold
EGO
$8.33B
| $236K | ﹤0.01% |
21,059
-5,355
| -20% | -$54.8K |
|
4910
PUT
Ironwood Pharmaceuticals
IRWD
$586M
| $236K | ﹤0.01% |
18,800
+2,100
| +13% | +$24.1K |
|
|
KC
4911
Kingsoft Cloud Holdings
KC
$2.96B
| $236K | ﹤0.01% |
39,026
+32,795
| +526% | +$267K |
|
4912
Lucid Motors
LCID
$3.11B
| $236K | ﹤0.01% |
930
+660
| +244% | +$197K |
|
4913
Pultegroup
PHM
$25.2B
| $236K | ﹤0.01% |
5,649
-25,068
| -82% | -$1.24M |
|
4914
CALL
SPS Commerce
SPSC
$2.55B
| $236K | ﹤0.01% |
1,800
-1,800
| -50% | -$225K |
|
|
TWO
4915
PUT
Two Harbors Investment
TWO
$1.27B
| $236K | ﹤0.01% |
10,700
-1,200
| -10% | -$26.1K |
|
|
VRAY
4916
DELISTED
ViewRay, Inc.
VRAY
| $236K | ﹤0.01% |
60,279
-32,886
| -35% | -$140K |
|
4917
CALL
Century Communities
CCS
$1.98B
| $235K | ﹤0.01% |
4,400
+1,700
| +63% | +$109K |
|
4918
Humacyte
HUMA
$168M
| $235K | ﹤0.01% |
33,351
+18,148
| +119% | +$106K |
|
4919
PUT
Rambus
RMBS
$8.98B
| $235K | ﹤0.01% |
7,400
-16,700
| -69% | -$462K |
|
|
VBIV
4920
CALL
DELISTED
VBI Vaccines, Inc. New Common Stock (Canada)
VBIV
| $235K | ﹤0.01% |
4,727
+2,160
| +84% | +$107K |
|
4921
CALL
Kimco Realty
KIM
$17.5B
| $234K | ﹤0.01% |
9,500
-4,200
| -31% | -$101K |
|
4922
PUT
ManpowerGroup
MAN
$2.6B
| $234K | ﹤0.01% |
2,500
-10,600
| -81% | -$1.08M |
|
4923
CALL
USA Compression Partners
USAC
$3.69B
| $234K | ﹤0.01% |
13,300
+700
| +6% | +$12K |
|
4924
PUT
Wingstop
WING
$3.8B
| $234K | ﹤0.01% |
2,000
-18,600
| -90% | -$2.64M |
|
|
EQC
4925
PUT
DELISTED
Equity Commonwealth
EQC
| $234K | ﹤0.01% |
8,300
+8,100
| +4,050% | +$216K |
|
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.