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 | |
|---|---|---|---|---|---|---|
|
NXDR
3001
CALL
Nextdoor Holdings
NXDR
$835M
| $939K | ﹤0.01% |
156,800
+39,000
| +33% | +$237K |
|
3002
CALL
Euronet Worldwide
EEFT
$3.02B
| $937K | ﹤0.01% |
7,200
+5,800
| +414% | +$736K |
|
3003
LiveRamp
RAMP
$2.29B
| $936K | ﹤0.01% |
25,049
-35,175
| -58% | -$1.47M |
|
3004
PUT
AllianceBernstein
AB
$3.47B
| $935K | ﹤0.01% |
19,900
+17,700
| +805% | +$823K |
|
|
HBI
3005
PUT
DELISTED
Hanesbrands
HBI
| $935K | ﹤0.01% |
62,800
+35,900
| +133% | +$565K |
|
3006
Qiagen
QGEN
$8.53B
| $935K | ﹤0.01% |
18,010
-2,873
| -14% | -$148K |
|
|
MFA
3007
MFA Financial
MFA
$929M
| $934K | ﹤0.01% |
57,981
+54,115
| +1,400% | +$935K |
|
3008
CALL
J.M. Smucker
SJM
$12.6B
| $934K | ﹤0.01% |
6,900
+400
| +6% | +$54.5K |
|
3009
PUT
United Natural Foods
UNFI
$3.01B
| $934K | ﹤0.01% |
22,600
-13,500
| -37% | -$552K |
|
3010
PUT
Rayonier
RYN
$6.49B
| $933K | ﹤0.01% |
25,021
+16,203
| +184% | +$576K |
|
3011
CALL
SSR Mining
SSRM
$5.57B
| $933K | ﹤0.01% |
42,900
-29,700
| -41% | -$559K |
|
3012
PUT
Fastenal
FAST
$54B
| $932K | ﹤0.01% |
31,400
+10,000
| +47% | +$280K |
|
|
HUT
3013
Hut 8
HUT
$12.4B
| $932K | ﹤0.01% |
33,782
+15,754
| +87% | +$482K |
|
3014
CALL
Tandem Diabetes Care
TNDM
$1.17B
| $930K | ﹤0.01% |
8,000
-32,200
| -80% | -$3.76M |
|
|
3015
PUT
Qiagen
QGEN
$8.53B
| $926K | ﹤0.01% |
17,824
-2,923
| -14% | -$151K |
|
3016
CALL
Portillo's
PTLO
$315M
| $925K | ﹤0.01% |
37,700
+18,000
| +91% | +$477K |
|
3017
PUT
Arbutus Biopharma
ABUS
$865M
| $923K | ﹤0.01% |
310,000
-34,500
| -10% | -$106K |
|
3018
PUT
Campbell Soup
CPB
$6.51B
| $922K | ﹤0.01% |
20,700
-19,500
| -49% | -$862K |
|
|
ERF
3019
CALL
DELISTED
Enerplus Corporation
ERF
| $919K | ﹤0.01% |
72,400
+25,400
| +54% | +$308K |
|
|
HA
3020
PUT
DELISTED
Hawaiian Holdings, Inc.
HA
| $918K | ﹤0.01% |
46,600
+12,700
| +37% | +$236K |
|
|
BCTXW
3021
PUT
DELISTED
BriaCell Therapeutics Corp Warrant
BCTXW
| $917K | ﹤0.01% |
90,500
+82,300
| +1,004% | +$328K |
|
3022
CALL
Pulmonx
LUNG
$49.4M
| $915K | ﹤0.01% |
36,900
+33,500
| +985% | +$865K |
|
|
CFLT
3023
PUT
DELISTED
Confluent
CFLT
| $914K | ﹤0.01% |
22,300
-11,300
| -34% | -$589K |
|
3024
PUT
Legend Biotech
LEGN
$4.3B
| $912K | ﹤0.01% |
25,100
+21,800
| +661% | +$861K |
|
3025
CALL
SGHC Ltd
SGHC
$7.3B
| $911K | ﹤0.01% |
+85,100
| New | +$735K |
|
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.