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Simplex Trading

Simplex Trading Portfolio holdings

AUM $171B
1-Year Est. Return 85%
 

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.

This Fund
S&P 500
This Quarter Est. Return
-17.92%
1 Year Est. Return
+85%
3 Year Est. Return
+183.25%
5 Year Est. Return
+145.21%
10 Year Est. Return
+1,056.84%
AUM
$94.1B
AUM Growth
-$15.3B
Cap. Flow
+$638M
Cap. Flow %
0.68%
Top 10 Hldgs %
40.12%
Holding
11,810
New
1,404
Increased
4,026
Reduced
4,284
Closed
1,790

Top Buys

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$286M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$82.3M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$72.6M
4
GOOG icon
Alphabet (Google) Class C
GOOG
+$64.2M
5
INTC icon
Intel
INTC
+$52.9M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$51.5M
2
SLV icon
iShares Silver Trust
SLV
+$41.8M
3
F icon
Ford
F
+$26.3M
4
UAL icon
United Airlines
UAL
+$22.7M
5
XOM icon
ExxonMobil
XOM
+$22.3M

Sector Composition

Rank Sector Weight
1 Miscellaneous 97.48%
2 Technology 0.84%
3 Consumer Discretionary 0.32%
4 Communication Services 0.32%
5 Financials 0.28%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PFE icon
10801
Pfizer
PFE
$162B
– –
-130,516
Closed -$6.65M
PFS icon
10802
Provident Financial Services
PFS
$3.09B
– –
-956
Closed -$21.4K
PGJ icon
10803
Invesco Golden Dragon China ETF
PGJ
$87.9M
– –
-2,130
Closed -$61K
PGRE
10804
CALL
DELISTED
Paramount Group
PGRE
– –
-27,600
Closed -$301K
PHAT icon
10805
PUT
Phathom Pharmaceuticals
PHAT
$769M
– –
-100
Closed -$1K
PHIO icon
10806
Phio Pharmaceuticals
PHIO
$12.5M
$0 ﹤0.01%
+4
New +$376
PHO icon
10807
Invesco Water Resources ETF
PHO
$2B
– –
-3,505
Closed -$185K
PHUN icon
10808
Phunware
PHUN
$42.6M
– –
-1,486
Closed -$124K
PI icon
10809
Impinj
PI
$5.27B
– –
-1,626
Closed -$81.7K
PILL icon
10810
Direxion Daily Pharmaceutical & Medical Bull 3X ETF
PILL
$23.1M
– –
-200
Closed -$2K
IMVP
10811
PUT
Invesco India ETF
IMVP
$106M
– –
-200
Closed -$5K
PINC
10812
DELISTED
Premier
PINC
– –
-893
Closed -$32.7K
PINC
10813
PUT
DELISTED
Premier
PINC
– –
-800
Closed -$28K
PIPR icon
10814
Piper Sandler
PIPR
$5.44B
– –
-8,984
Closed -$271K
PIPR icon
10815
PUT
Piper Sandler
PIPR
$5.44B
– –
-5,200
Closed -$170K
PJT icon
10816
PJT Partners
PJT
$4.67B
– –
-269
Closed -$18.7K
PKE icon
10817
PUT
Park Aerospace
PKE
$680M
– –
-100
Closed -$1K
PKOH icon
10818
Park-Ohio Holdings
PKOH
$673M
– –
-500
Closed -$7.03K
PL icon
10819
Planet Labs
PL
$6.59B
– –
-35,432
Closed -$183K
PKX icon
10820
POSCO
PKX
$19B
$0 ﹤0.01%
17
-1,394
-99% -$76.8K
PKX icon
10821
PUT
POSCO
PKX
$19B
– –
-5,200
Closed -$308K
PLMR icon
10822
Palomar
PLMR
$3.59B
– –
-5,994
Closed -$362K
PLOW icon
10823
Douglas Dynamics
PLOW
$976M
– –
-455
Closed -$14.2K
PLOW icon
10824
PUT
Douglas Dynamics
PLOW
$976M
– –
-500
Closed -$17K
PLXS icon
10825
Plexus
PLXS
$6.56B
– –
-213
Closed -$17.3K
431 432
433
434 435

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Simplex Trading's Q2 2022 Portfolio in Review

As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Simplex Trading's Q2 2022 filing shows 1,404 new, 4,026 increased, 4,284 reduced and 1,790 closed positions. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $51.5M.

By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.

  • Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
  • Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
  • Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
  • Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
  • Simplex Trading opened 1,404 new positions and closed 1,790 in Q2 2022.
  • Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.

Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.