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 | |
|---|---|---|---|---|---|---|
3476
CALL
Dana Inc
DAN
$2.93B
| $657K | ﹤0.01% |
37,400
+32,800
| +713% | +$671K |
|
3477
Tecnoglass
TGLS
$2.01B
| $657K | ﹤0.01% |
26,037
-1,991
| -7% | -$44.7K |
|
|
EVA
3478
CALL
DELISTED
Enviva Inc.
EVA
| $656K | ﹤0.01% |
8,300
-3,600
| -30% | -$263K |
|
|
POSH
3479
DELISTED
Poshmark, Inc. Class A Common Stock
POSH
| $656K | ﹤0.01% |
51,867
+28,880
| +126% | +$418K |
|
3480
CALL
Gaotu Techedu
GOTU
$374M
| $655K | ﹤0.01% |
381,100
+48,700
| +15% | +$92.6K |
|
3481
CALL
Cemex
CX
$17.6B
| $654K | ﹤0.01% |
123,700
-81,100
| -40% | -$459K |
|
3482
PUT
eHealth
EHTH
$43.2M
| $654K | ﹤0.01% |
52,700
+41,000
| +350% | +$706K |
|
|
GPP
3483
PUT
DELISTED
Green Plains Partners LP
GPP
| $652K | ﹤0.01% |
46,100
+20,700
| +81% | +$293K |
|
3484
PUT
Fidelity Nasdaq Composite Index ETF
ONEQ
$10.2B
| $650K | ﹤0.01% |
11,700
+11,200
| +2,240% | +$612K |
|
|
WIRE
3485
CALL
DELISTED
Encore Wire Corp
WIRE
| $650K | ﹤0.01% |
5,700
+3,600
| +171% | +$432K |
|
3486
CALL
Atkore
ATKR
$2.54B
| $649K | ﹤0.01% |
6,600
-2,800
| -30% | -$290K |
|
|
SII
3487
Sprott
SII
$2.7B
| $649K | ﹤0.01% |
12,927
-13,555
| -51% | -$562K |
|
|
RTLR
3488
CALL
DELISTED
Rattler Midstream LP Common Units
RTLR
| $649K | ﹤0.01% |
46,500
-14,300
| -24% | -$186K |
|
3489
CALL
Lufax Holding
LU
$1.27B
| $648K | ﹤0.01% |
29,100
+10,450
| +56% | +$230K |
|
3490
Under Armour Class C
UA
$2.95B
| $648K | ﹤0.01% |
41,688
-28,235
| -40% | -$442K |
|
|
WRK
3491
DELISTED
WestRock Company
WRK
| $648K | ﹤0.01% |
+13,797
| New | +$630K |
|
3492
First Trust Health Care AlphaDEX Fund
FXH
$1.02B
| $647K | ﹤0.01% |
5,650
-863
| -13% | -$96.7K |
|
3493
iShares US Technology ETF
IYW
$23.3B
| $647K | ﹤0.01% |
6,287
+1,752
| +39% | +$179K |
|
3494
CALL
MaxLinear
MXL
$5.88B
| $647K | ﹤0.01% |
11,100
-700
| -6% | -$42.6K |
|
|
OLPX
3495
DELISTED
Olaplex Holdings
OLPX
| $647K | ﹤0.01% |
41,446
-7,042
| -15% | -$134K |
|
3496
PUT
Amplitude
AMPL
$1.15B
| $646K | ﹤0.01% |
35,100
+33,300
| +1,850% | +$1.01M |
|
|
LNW
3497
PUT
DELISTED
Light & Wonder
LNW
| $646K | ﹤0.01% |
11,000
-10,800
| -50% | -$653K |
|
3498
Safe Bulkers
SB
$766M
| $646K | ﹤0.01% |
135,845
-20,408
| -13% | -$83.3K |
|
|
AVTA
3499
DELISTED
Avantax, Inc. Common Stock
AVTA
| $646K | ﹤0.01% |
+33,055
| New | +$599K |
|
|
BNFT
3500
PUT
DELISTED
Benefitfocus, Inc.
BNFT
| $646K | ﹤0.01% |
51,200
+34,600
| +208% | +$369K |
|
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.